Abstract
Steroidogenesis in pre- and postspawned ovaries of Clarias gariepinus, collected in the Hula Nature Reserve in Israel, was studied following in vitro incubation with [3H] -pregnenolone or [3H] -androstenedione as precursors.
In both experimental groups the ovaries synthesized progesterone, 17α-hydroxyprogesterone, 17α, 20β-dihydroxy-4-pregnen-3-one, androstenedione, testosterone, estrone, estradiol-17β, and several 5β-reduced C21- and
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