The present invention relates to a microbial method for the simultaneous dehydrogenation and oxidation of 4-an-drosten-3,17-dione to produce 17a-oxo-D-homo-1,4-andrustadiene-3,17-dione in high yield and high substrate concentrations, by means of filamentous Fusarium species.

 
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> Methods and compositions for the identification of anti-poxvirus agents

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