Abstract
Steroid and steroid glucuronide synthesis in feral male African catfish was investigated in vitro by incubating testes with [3H]-pregnenolone and seminal vesicles with [3H]-androstenedione. In testes, the capacity to form progestins, androgens, especially 11-oxygenated ones, and steroid glucuronides increased enormously in the periods of full spermatogenesis and breeding, with 5β-pregnane-3α,17α,20α-triol
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