[Morphological recovery in the polycystic ovaries of persistent-estrus rats induced by continuous illumination (author's transl)].


When mature female rats having been showing at least 2 consecutive 4-day estrous cycles were raised in a room with continuous lighting (LL), their vaginal smear pattern became irregular by 7 to 9 days. and a persistent-estrus (P-E) appeared around 25 to 75 days of exposure. Ovaries from LL-exposed rats showing irregular cycles or P-E had signs of cystic… (More)


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