DEVELOPING A WAY OF OBTAINING SUPERFICIAL PROTECTIVE ANTIGENES <i>S. DUBLIN</i> AND <i>S. TYPHIMURIUM</i> BY MEANS OF MURIATIC ACID HYDROXYLAMINE AND UREA FOR PREPARATION OF VACCINE COMPONENTS AGAINST THE SALMONELLOSIS OF CATTLE
The article considers the ways of obtaining protective antigenes S. dublin and S. typhimurium with the help of hydroxylamine muriatic acid and urea. The selection of various concentration extractive substances, bacterial cages, inactivating agent allowed obtaining a non-toxic sample for further immunization of animals.