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Progesterone (P4) and synthetic progestins enter the aquatic environment through wastewater treatment plant effluents and agricultural run-off, posing potential risks to aquatic organisms due to their biological activity. P4 is a precursor of a number of steroids in vertebrates, including estrogens and androgens. Mussels Mytilus galloprovincialis were exposed to P4 at the ng to low μg/L range (0.02–10μg/L)...
Mussels (Mytilus galloprovincialis) were exposed to different concentrations of testosterone (T: 20, 200 and 2000ng/L) in a semi-static water regime (1-day dosing intervals) for up to 5 days in an attempt to see whether endogenous steroid levels and steroid metabolism were altered by exogenous exposure to testosterone. Whole tissue levels of total testosterone (free+esterified) sharply increased in...
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