title: Effect of serotonin administration on the ultrastructure of pinealocytes during the period of maximal sexual activity of the male hedgehog (Erinaceus europaeus L.).
mesh_terms: D000818:Animals; D006364:Hedgehogs / Q000502:physiology*; D008297:Male; D008854:Microscopy, Electron; D010870:Pineal Gland / Q000187:drug effects / Q000648:ultrastructure*; D012621:Seasons; D012701:Serotonin / Q000494:pharmacology*; D012726:Sexual Behavior, Animal
chemical_list: D012701:Serotonin