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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">biopreparat</journal-id><journal-title-group><journal-title xml:lang="ru">БИОпрепараты. Профилактика, диагностика, лечение</journal-title><trans-title-group xml:lang="en"><trans-title>Biological Products. Prevention, Diagnosis, Treatment</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2221-996X</issn><issn pub-type="epub">2619-1156</issn><publisher><publisher-name>Scientific Centre for Expert Evaluation of Medicinal Products</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">biopreparat-87</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Изучение биологической и генетической стабильности штамма № 205 вируса клещевого энцефалита, применяемого для производства вакцин клещевого энцефалита ЭнцеВир, ЭнцеВир Нео детский</article-title><trans-title-group xml:lang="en"><trans-title>Analysis of biological and genetic stability of tick-borne encephalitis strain 205 used in the production of tick-borne encephalitis vaccines EnceVir and EnceVir Neo for children</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воробьева</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobyeva</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Главный эксперт управления экспертизы противовирусных МИБП Центра экспертизы и контроля МИБП, д-р мед. наук, профессор</p></bio><bio xml:lang="en"><p>Chief expert of the Division for Evaluation of Antiviral Medicinal Immunobiological Products of the Centre for Evaluation and Control of Medicinal Immunobiological Products. Doctor of Medical Sciences, professor</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Игнатьев</surname><given-names>Г. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Ignatyev</surname><given-names>G. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Заместитель директора, д-р мед. наук, профессор</p></bio><bio xml:lang="en"><p>Deputy director. Doctor of Medical Sciences, professor</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нетесова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Netesova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Заместитель директора, д-р биол. наук</p></bio><bio xml:lang="en"><p>Deputy director. Doctor of Biological Sciences</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Отрашевская</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Otrashevskaya</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Начальник отдела НИОКР</p></bio><bio xml:lang="en"><p>Head of the R&amp;D Department</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ставицкая</surname><given-names>Н. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Stavitskaya</surname><given-names>N. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Консультант, д-р мед. наук, профессор</p></bio><bio xml:lang="en"><p>Consultant. Doctor of Medical Sciences, professor</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербинина</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbinina</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эксперт 2-й категории лаборатории вирусных вакцин Испытательного центра экспертизы качества МИБП</p></bio><bio xml:lang="en"><p>2nd professional category expert of the Laboratory of Viral Vaccines of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Саркисян</surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sarkisyan</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Начальник лаборатории вирусных вакцин Испытательного центра экспертизы качества МИБП, канд. мед. наук</p></bio><bio xml:lang="en"><p>Head of the Laboratory of Viral Vaccines of the Testing Centre for Evaluation of Medicinal Immunobiological Products’ Quality. Candidate of Medical Sciences</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шевцов</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shevtsov</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Начальник управления экспертизы противовирусных МИБП Центра экспертизы и контроля МИБП, канд. мед. наук</p></bio><bio xml:lang="en"><p>Head of the Division for Evaluation of Antiviral Medicinal Immunobiological Products of the Centre for Evaluation and Control of Medicinal Immunobiological Products. Candidate of Medical Sciences</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рукавишников</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Rukavishnikov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аместитель начальника управления экспертизы противовирусных МИБП Центра экспертизы и контроля МИБП, канд. биол. наук</p></bio><bio xml:lang="en"><p>Deputy head of the Division for Evaluation of Antiviral Medicinal Immunobiological Products of the Centre for Evaluation and Control of Medicinal Immunobiological Products. Candidate of Biological Sciences</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бондарев</surname><given-names>В. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Bondarev</surname><given-names>V. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Директор Центра экспертизы и контроля МИБП, д-р мед. наук, профессор</p></bio><bio xml:lang="en"><p>Director of the Centre for Evaluation and Control of Medicinal Immunobiological Products. Doctor of Medical Sciences, professor</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научный центр экспертизы средств медицинского применения</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific Centre for Expert Evaluation of Medicinal Products</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский научно-исследовательский институт вакцин и сывороток и предприятие по производству бактерийных препаратов</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Research Institute of Vaccines and Sera &amp; Enterprise for Production of Bacterial Products</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>НПО «СибЭнзим»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific-Production Association SibEnzyme Ltd</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Научно-производственное объединение по медицинским иммунобиологическим препаратам «Микроген»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific-Production Association «Microgen»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Филиал НПО по медицинским иммунобиологическим препаратам «Микроген» «НПО «Вирион»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«Virion» Tomsk Branch of the Scientific-Production Association «Microgen»</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>20</day><month>02</month><year>2018</year></pub-date><volume>17</volume><issue>2</issue><fpage>95</fpage><lpage>102</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Воробьева М.С., Игнатьев Г.М., Нетесова Н.А., Отрашевская Е.В., Ставицкая Н.Х., Щербинина М.С., Саркисян К.А., Шевцов В.А., Рукавишников А.В., Бондарев В.П., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Воробьева М.С., Игнатьев Г.М., Нетесова Н.А., Отрашевская Е.В., Ставицкая Н.Х., Щербинина М.С., Саркисян К.А., Шевцов В.А., Рукавишников А.В., Бондарев В.П.</copyright-holder><copyright-holder xml:lang="en">Vorobyeva M.S., Ignatyev G.M., Netesova N.A., Otrashevskaya E.V., Stavitskaya N.K., Shcherbinina M.S., Sarkisyan K.A., Shevtsov V.A., Rukavishnikov A.V., Bondarev V.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.biopreparations.ru/jour/article/view/87">https://www.biopreparations.ru/jour/article/view/87</self-uri><abstract><p>Представлены результаты многолетнего изучения биологической и генетической стабильности штамма № 205 вируса клещевого энцефалита, используемого в ФГУП «НПО «Микроген» для производства культуральных инактивированных очищенных сорбированных вакцин клещевого энцефалита: ЭнцеВир (для вакцинации взрослых) и ЭнцеВир Нео детский (для вакцинации детей). Биологическую стабильность штамма № 205 изучали на этапах получения посевных серий вируса при пассажах на аутбредных белых мышах: исходный производственный штамм № 205, производственный «штаммовый запас». Лиофилизаты производственных посевных серий изучали на различных сроках хранения при температуре минус 20 °С (до 9 лет и более). Определяли показатели биологической активности (титры вируса клещевого энцефалита (КЭ) в lg LD50/мл) при различных способах заражения аутбредных белых мышей, а также определяли подлинность (специфичность) штамма № 205 по отношению к эталонному в реакции биологической нейтрализации (РБН) в соответствии с требованиями фармакопейной статьи предприятия (ФСП) на вышеуказанные вакцины КЭ. Эти же материалы, а также одну из серий вакцины КЭ, полученной на основе производственного «штаммового запаса» вируса КЭ штамма № 205 (лиофилизат 1986 г.), изучали на сохранность генетической стабильности в процессе пассирования и длительного хранения методом полимеразной цепной реакции (ПЦР) и секвенирования. Впервые показана биологическая и генетическая стабильность вируса КЭ, штамм № 205, в процессе производства вакцин КЭ.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of a long-term study of biological and genetic stability of tick-borne encephalitis strain 205 which is used by the FSUE «SPA «Microgen» to produce tick-borne encephalitis vaccines EnceVir (for adults) and EnceVir Neo for children, both of which are tissue cultured, inactivated, purified, and sorbed. The biological stability of strain 205 was studied at the seed lot stage using passages on outbred white mice: initial production strain 205 and production «stock strain». Lyophilisates of production seed lots were studied at different storage intervals at -20 °С (up to 9 years of storage and more). Biological activity parameters (tick-borne encephalitis virus (TBEV) titre in log LD50/ml) were studied by using different ways of infecting outbred white mice, and strain 205 identification (specificity) was determined by comparing it to a reference strain in a biological neutralization assay (BNA) according to the manufacturer’s specifications for the vaccines concerned. The same materials and a batch of TBEV vaccine produced from the production «stock strain» (lyophilisate of 1986) were analyzed by polymerase chain reaction (PCR) and sequencing for genetic stability during passaging and long-term storage. The results of the study made it possible to demonstrate the biological and genetic stability of strain 205 during production of TBEV vaccines.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>клещевой энцефалит</kwd><kwd>вакцинация</kwd><kwd>производство вакцин клещевого энцефалита</kwd><kwd>биологическая и генетическая стабильность</kwd><kwd>подлинность в реакции биологической нейтрализации</kwd><kwd>пассажи через мозг аутбредных белых мышей</kwd><kwd>полимеразная цепная реакция</kwd><kwd>праймеры</kwd><kwd>секвенирование</kwd><kwd>tick-borne encephalitis</kwd><kwd>vaccination</kwd><kwd>production of tick-borne encephalitis vaccines</kwd><kwd>biological and genetic stability</kwd><kwd>identification in a biological neutralization assay</kwd><kwd>outbred white mouse brain passage</kwd><kwd>polymerase chain reaction</kwd><kwd>primers</kwd><kwd>sequencing</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Воробьева МС, Меркулов ВА, Ладыженская ИП, Рукавишников АВ, Шевцов ВА. История создания и оценки качества современных вакцин КЭ отечественного и зарубежного производства. Ведомости Научного центра экспертизы средств медицинского применения 2013; (3): 40-4.</mixed-citation><mixed-citation xml:lang="en">Vorobieva MS, Merkulov VA, Ladyzhenskaya IP, Rukavishnikov AV, Shevtsov VA. The history and quality evaluation of tick-borne encephalitis vaccine. Vedomosti Nauchnogo tsentra ekspertizy sredstv meditsinskogo primeneniya 2013; (3): 40–4 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Barrett PN, Plotkin SA, Ehrlich HJ. Tick-borne encephalitis virus vaccines. In: Plotkin SA, Orenstein WA, Offit PA, eds. Vaccines. Philadelphia: Saunders Elsevier; 2008. P. 841-56.</mixed-citation><mixed-citation xml:lang="en">Barrett PN, Plotkin SA, Ehrlich HJ. Tick-borne encephalitis virus vaccines. In: Plotkin SA, Orenstein WA, Offit PA, eds. Vaccines. Philadelphia: Saunders Elsevier; 2008. P. 841–56.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Морозова ОВ. Проблемы и перспективы профилактики, диагностики и лечения клещевого энцефалита. Российский медицинский журнал 2014; 20(6): 26-31.</mixed-citation><mixed-citation xml:lang="en">Morozova OV. Problems and prospects of prevention, diagnosis and treatment of tick-borne encephalitis. Rossiyskiy meditsinskiy zhurnal 2014; 20(6): 26–31 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Pastorino BA, Peyrefitte CN, Grandadam M, Thill MC, Tolou HJ, Bessaud M. Mutagenesis analysis of the NS2B determinants of the Alkhurma virus NS2B-NS3 protease activation. J Gen Virol. 2006; 87: 3279-83.</mixed-citation><mixed-citation xml:lang="en">Pastorino BA, Peyrefitte CN, Grandadam M, Thill MC, Tolou HJ, Bessaud M. Mutagenesis analysis of the NS2B determinants of the Alkhurma virus NS2B-NS3 protease activation. J Gen Virol. 2006; 87: 3279–83.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Pöllabauer EM, Pavlova BG, Löw-Baselli A, Fritsch S, Prymula R, Angermayr R, et al. Comparison of immunogenicity and safety between two paediatric TBE vaccines. Vaccine 2010; 28(29): 4680-5.</mixed-citation><mixed-citation xml:lang="en">Pöllabauer EM, Pavlova BG, Löw-Baselli A, Fritsch S, Prymula R, Angermayr R, et al. Comparison of immunogenicity and safety between two paediatric TBE vaccines. Vaccine 2010; 28(29): 4680–5.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Горбунов МА, Павлова ЛИ, Воробьева МС, Расщепкина МН, Стронин ОВ. Результаты клинических испытаний вакцины против клещевого энцефалита ЭнцеВир. Эпидемиология и вакцинопрофилактика 2002; (1): 64-8.</mixed-citation><mixed-citation xml:lang="en">Gorbunov MA, Pavlova LI, Vorobieva MS, Raschepkina MN, Stronin OB. Results of clinical trials of a vaccine against tick-borne encephalitis EnceVir. Epidemiologiya i vaktsinoprofilaktika 2002; (1): 64–8 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Романенко ВВ, Анкудинова АВ, Килячина АС. Эффективность программы массовой вакцинопрофилактики клещевого энцефалита в Свердловской области. Вестник УГМА 2010; (21): 125-32.</mixed-citation><mixed-citation xml:lang="en">Romanenko VV, Ankudinova AV, Kilyachina AS. The effectiveness of the program of mass vaccination encephalitis in the Sverdlovsk Region. Vestnik UGMA 2010; (21): 125–32 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Воробьева МС, Расщепкина МН, Красильников ИВ, Мищенко ИА, Шарова ОИ, Рюмина ТА, Билалова ГП. Результаты лабораторных испытаний модифицированной вакцины против клещевого энцефалита «ЭнцеВир», производства ФГУП «ВИРИОН». В кн.: Актуальные вопросы разработки, производства и применения иммунобиологических и фармацевтических препаратов. Тезисы конференции, 2001. С. 8-11.</mixed-citation><mixed-citation xml:lang="en">Vorobieva MS Raschepkina MN, Krasilnikov IV, Mischenko IA, Sharov OI, Ryumin TA Bilalova GP. The results of laboratory tests of the modified vaccine «EnñeVir» against tick-borne encephalitis, produced by FSUE «VIRION». In: Topical issues of development, production and use of immunobiological and pharmaceutical preparations. Abstracts of Conference, 2001. P. 8–11 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Котыков ИВ, Киселева НН, Федоров ЮВ Изучение популяции производственного штамма 205 вируса клещевого энцефалита. В кн.: Тезисы докладов Всесоюзного симпозиума «Современные проблемы эпидемиологии, диагностики и профилактики клещевого энцефалита», 1990. С. 71-2.</mixed-citation><mixed-citation xml:lang="en">Kotykov IV, Kiseleva NN, Fedorov YuV. Study of the population of production strain 205 of the virus of tick-borne encephalitis. In: Abstracts of the All-Union Symposium «Modern epidemiology problems, diagnosis and prevention of tick-borne encephalitis», 1990. P. 71–2 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Holzmann H, Vorobyova MS, Ladyzhenskaya IP, Forenczi E, Kundi M, Kunz C, Heinz FX. Molecular epidemiology of tick-borne encephalitis virus: cross-protection between European and Far Eastern subtypes. Vaccine 1992; 10(5): 345-9.</mixed-citation><mixed-citation xml:lang="en">Holzmann H, Vorobyova ÌS, Ladyzhenskaya IP, Forenczi E, Kundi M, Kunz C, Heinz FX. Molecular epidemiology of tick-borne encephalitis virus: cross-protection between European and Far Eastern subtypes. Vaccine 1992; 10(5): 345–9.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">ICH Guidance, Q5D: Derivation and Characterisation of Cell Substrates Used for Production of Biotechnological/Biological Products (63 FR 50244; September 21, 1998).</mixed-citation><mixed-citation xml:lang="en">ICH Guidance, Q5D: Derivation and Characterisation of Cell Substrates Used for Production of Biotechnological/Biological Products (63 FR 50244; September 21, 1998).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Андреев ЮЛ, Маева ТВ, Кедич ЛА, Золина ЕД, Куслий АГ. Физико-химическая и иммунологическая характеристика вакцины «Геп-а-ин-вак» при различных условиях хранения. Биопрепараты. Профилактика, диагностика, лечение 2008; (4): 26-8.</mixed-citation><mixed-citation xml:lang="en">Andreev YuL, Maeva TV, Kedich LA, Zolina ED, Kusliy AG. Physico-chemical and immunological characteristics of the vaccine «Hep-in-a-vak» at different storage conditions. Biopreparation. Prevention, Diagnosis, Treatment 2008; (4): 26–8 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Ecker M, Allison SL, Meixner T, Heinz FX. Sequence analysis and genetic classification of tick-borne encephalitis viruses from Europe and Asia. J Gen Virol. 1999; 80(1): 179-85.</mixed-citation><mixed-citation xml:lang="en">Ecker M, Allison SL, Meixner T, Heinz FX. Sequence analysis and genetic classification of tick-borne encephalitis viruses from Europe and Asia. J Gen Virol. 1999; 80(1): 179–85.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">ICH Guidance, Q5A(R1): Viral Safety Evaluation of Biotechnology Products Derived from Cell Lines of Human or Animal Origin (63 FR 51074; September 24, 1998).</mixed-citation><mixed-citation xml:lang="en">ICH Guidance, Q5A(R1): Viral Safety Evaluation of Biotechnology Products Derived from Cell Lines of Human or Animal Origin (63 FR 51074; September 24, 1998).</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Akey DL, Brown WC, Dutta S, Konwerski J, Jose J, Jurkiw TJ, et al. Flavivirus NS1 structures reveal surfaces for associations with membranes and the immune system. Science 2014; 343(6173): 881-5.</mixed-citation><mixed-citation xml:lang="en">Akey DL, Brown WC, Dutta S, Konwerski J, Jose J, Jurkiw TJ, et al. Flavivirus NS1 structures reveal surfaces for associations with membranes and the immune system. Science 2014; 343(6173): 881–5.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Leung JY, Pijlman GP, Kondratieva N, Hyde J, Mackenzie JM, Khromykh AA. Role of nonstructural protein NS2A in flavivirus assembly. J Virol. 2008; 82(10): 4731-41.</mixed-citation><mixed-citation xml:lang="en">Leung JY, Pijlman GP, Kondratieva N, Hyde J, Mackenzie JM, Khromykh AA. Role of nonstructural protein NS2A in flavivirus assembly. J Virol. 2008; 82(10): 4731–41.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Kofler RM, Heinz FX, Mandl CW. Capsid protein C of tick-borne encephalitis virus tolerates large internal deletions and is a favorable target for attenuation of virulence. J Virol. 2002; 76(7): 3534-43.</mixed-citation><mixed-citation xml:lang="en">Kofler RM, Heinz FX, Mandl CW. Capsid protein C of tick-borne encephalitis virus tolerates large internal deletions and is a favorable target for attenuation of virulence. J Virol. 2002; 76(7): 3534–43.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Mandl CW, Heinz FX, Stockl E, Kunz C. Genome sequence of tick-borne encephalitis virus (Western subtype) and comparative analysis of nonstructural proteins with other flaviviruses. Virology 1989; 173(1): 291-301.</mixed-citation><mixed-citation xml:lang="en">Mandl CW, Heinz FX, Stockl E, Kunz C. Genome sequence of tick-borne encephalitis virus (Western subtype) and comparative analysis of nonstructural proteins with other flaviviruses. Virology 1989; 173(1): 291–301.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Zent O, Bröker M. Tick-borne encephalitis vaccines: past and present. Expert Rev Vaccines 2005; 4(5): 747-55.</mixed-citation><mixed-citation xml:lang="en">Zent O, Bröker M. Tick-borne encephalitis vaccines: past and present. Expert Rev Vaccines. 2005; 4(5): 747–55.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
