Groups of 10 animals each were immunized intraperitoneally with 0.2 ml of a dilution of the test vaccines or of the standard preparation. On day 14 after immunization, blood samples were taken under anesthesia by heart puncture
Groups of 10 animals each were immunized intraperitoneally with 0.2 ml of a dilution of the test vaccines or of the standardpreparation. On day 14 after immunization, blood samples were taken under anesthesia by heart puncture