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The gel diffusion test on 806 sera from cattle recovered from F & M disease showed that type O virus was present on 13 farms and type A on 5. Of eleven strains of virus isolated in the Ukraine between 1959 and 1962, five were typical type O. Two type O variants (four strains) differed from the...

Olilnik, M. K.; Dudnikov, A. I.
Veterinariya, 1965, 5, pp 10-18 pp.