For citations:

Zhyltsov I.V., Veremey I.S., Semionov V.M., Generalov I.I., Yegorov S.K. CLINICAL FEATURES OF BETA-LACTAMASE ACTIVITY OF HUMAN BLOOD SERUM. Health and Ecology Issues. 2011;(3):35-39. (In Russ.) https://doi.org/10.51523/2708-6011.2011-8-3-6