Abstract:Cholera toxin (CT) and the heat-labile enterotoxin from Escherichia coli, when injected intraperitoneally into cycling hamsters but not rats or mice, induced a massive uterine growth similar to that normally induced by the implanting blastocyst during pregnancy. CT and heat-labile enterotoxin are the only known agents that have this action in any species. Uterine weight reached a maximal sixfold increase 48 h after injection of CT. Concurrent injection of estrogen, progesterone, and CT increased the maximal re… Show more
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