the effect of gossypol , a polyphenolic compound with antifertility action on human males , has been investigated on the following oxidoreductases purified from human tissues : lactate dehydrogenase ( ec 1.1.1.27 ) isozymes 1 or b4 from heart , 5 or a4 from liver and x or c4 from spermatozoa ;
C0030016
oxidoreductases
C0022917
lactate dehydrogenase