title: [Evidence for involvement of 2 enzymes in the process of microbiological 1,2-dehydration and reduction of the delta'-bond in the ring of A steroids].
vernacular_title: Dokazatel'stvo uchatiia dvukh fermentov v protsesse mikrobiologicheskogo 1,2-degidrorivaniia i vosstavovleniia delta'-sviazi kol'tsa A steroidov.