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Fluctuations in the plasma concentration of estradiol, progesterone, and prolactin across pregnancy regulate maternal nest-building (digging, straw-carrying, and hair-plucking) and food intake in rabbits. Because testosterone levels also change through pregnancy, we investigated if the injection of testosterone propionate (TP; 1 or 5 mg/day) or 5α-dihydrotestosterone propionate (5 or 10 mg/day) for...
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