Haffkine Bio-Pharmaceutical Corporation Ltd. Manufactures Anti Tetanus Serum Made from Equine Blood. Haffkine Bio-Pharmaceutical Corporation Ltd. Is the supplier of wide range of bacterial and viral vaccines for diphtheria, tetanus, whooping cough, plague, poliomyelitis and rabies. Anti Tetanus Serum Made from Equine Blood is used for both preventing and curing tetanus. Anti Tetanus Serum Made from Equine Blood is prepared by hyperimmunising horses with tetanus toxin. Blood plasma obtained from the hyperimmunised horses which is rich in antibodies to tetanus toxin, is enzyme refined purified and concentrated. The antitoxin has the specific power of neutralising the toxin secreted by Clostridium tetani, the causative organism of tetanus. It is available in Ampoules of 1 ml, 3-4 ml and 5 ml.