Bar Vac 7 50DS is recommended for vaccination of healthy, susceptible cattle and sheep against disease caused by Clostridium chauvoei, CI. Septicum, CI. Novyi, CI. Sordellii, CI. Perfringens Types C and D. Immunity may be provided against the beta and epsilon toxins elaborated by CI. Perfringens Type B. This immunity is derived from the combination of Type C and Type D fractions. Store out of direct sunlight at a temperature between 35-45 degrees. Avoid freezing and shake well before using. Be sure to use the entire contents when first opened. Comes in a 50-dose package.