For citations:

Abramtseva M.V., Alekhina N.S., Kolyshkina E.D. Experimental evaluation of the possibility of determining bacterial endotoxins in typhoid Vi polysaccharide vaccines using the gel-clot test. Biological Products. Prevention, Diagnosis, Treatment. 2023;23(4):570-583. (In Russ.) https://doi.org/10.30895/2221-996X-2023-23-4-570-583