CEVAC BI L CONTAINS THE HITCHNER B1 STRAIN OF NEWCASTLE DISEASE;VIRUS AND MASSACHUSETTS TYPE OF BRONCHITIS VIRUS IN LIVE, FREEZE-;DRIED FORM. THE EMBRYONATED CHICKEN EGGS USED IN THE PRODUCTION;OF THE VACCINE ARE OBTAINED FROM SPECIFIC-PATHOGEN-FREE (SPF);FLOCKS.;ONE DOSE CONTAINS:;MASSACHUSETTS TYPE OF BRONCHITIS VIRUS....AT LEAST 10^2.63 EID50;NDV B1 STRAIN.........AT LEAST 10^5.5 EID50