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The urinary levels of estrone sulfate and 11-ketotetranor prostaglandin F metabolite (11-ketotetranor PGF metabolite) during gestation in guinea pigs were measured by radioimmunoassays. Vehicle and Clophen A50 (polychlorinated biphenyls)-treated animals were compared. Gestation was arbitrarily divided into four periods, and the mean hormone levels during each period were compared between the two treatment groups. The Clophen A50 treatment (100 mg total, during Days 16-60), which causes fetal death, was correlated to significantly higher levels of estrone sulfate (p less than 0.05) and 11-ketotetranor PGF metabolite (p less than 0.01) during Days 47-60 (Period IV) of gestation.

biology of reproduction

Urinary Levels of Estrone Sulfate and 11-Ketotetranor Prostaglandin F Metabolite in Pregnant Guinea Pigs Given Clophen A50 (Polychlorinated Biphenyls)1