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Effects of graded doses of the pesticide heptachlor on body weight, mating success, oestrous cycle, gestation length and litter size in laboratory rats
(Pergamon, 1995-05-01)
Adult female Sprague-Dawley rats were injected with 5 or 20 mg/kg body weight
heptachlor solution every other day for up to 18 days. They were weighed every day and the
stage of oestrus determined by vaginal smears. ...