[Production of purified foot-and-mouth disease virus antigens and the specific sera against them].

It was demonstrated that the use of laboratory techniques could be contributive to the production of purified antigens of the F.M.D. virus, such a-140 S, 12 S, and VIA. The isolated purified antigens were used to immunize guinea pigs, obtaining specific antisera against them. It was found that the latter contained specific complement-fixing and precipitating antibodies, while the 140 S serum also had neutralizing antibodies. The produced 140 S serum contained certain amounts of 12 S antibodies, which was considered to be the result of a spontaneous degradation of the 140 S antigen.