Changes in the hypothalamo-hypophysial neurosecretory system and the gonads of the vole (Microtus agrestis).
D000818:Animals; D001947:Breeding / Q000502:physiology*; D005260:Female; D005298:Fertility / Q000502:physiology*; D006066:Gonads / Q000033:anatomy & histology; D007030:Hypothalamo-Hypophyseal System / Q000033:anatomy & histology / Q000502:physiology*; D008297:Male; D009489:Neurosecretion / Q000502:physiology*; D009929:Organ Size; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology*; D012377:Rodentia; D012621:Seasons