Cohabitation with a female activates testosterone-dependent social aggression in male rats independently of changes in serum testosterone concentration.

@article{Albert1988CohabitationWA,
  title={Cohabitation with a female activates testosterone-dependent social aggression in male rats independently of changes in serum testosterone concentration.},
  author={David J. Albert and E M Dyson and Michael Leonard Walsh and Dragutin Petrovic},
  journal={Physiology & behavior},
  year={1988},
  volume={44 6},
  pages={735-40}
}
Male hooded rats (350 to 450 g) were sham-castrated, castrated and implanted with testosterone-filled, or castrated and implanted with empty Silastic tubes. Twenty-four hours postoperatively the animals in each group were housed with a female or a male similar in size to the female. Beginning one week following surgery and continuing for three weeks thereafter, the female or male cagemate was removed once each week while a 15-min test of aggression toward an unfamiliar male intruder was… CONTINUE READING

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