Abstract
Summary
1) The average weight of the right ovary of C57BL/6JAX mice 90 to 120 days old was about the same in mice killed in estrus, early metestrus, and diestrus. The average uterine weight varied according to the stage of the cycle. 2) The average ovarian weight increase after 20 i.u. of equine serum gonadotrophin was the same when the gonadotrophin was administered in estrus, early metestrus, and diestrus. Also the average uterine weight after ovarian stimulation was about the same, regardless of the stage of the cycle in which the stimulus was begun.
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