title: The annual cycle of changes in activity of the neurosecretory neurocytes of the preoptic nucleus in Rana esculenta L.
mesh_terms: D000818:Animals; D001001:Anura; D005260:Female; D008297:Male; D009489:Neurosecretion; D010507:Periodicity; D011893:Rana esculenta / Q000502:physiology*; D013477:Superior Colliculi / Q000166:cytology*