title: The synaptic ribbons of the guinea-pig pineal gland under normal and experimental conditions.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002462:Cell Membrane; D003624:Darkness; D005260:Female; D006168:Guinea Pigs; D002479:Inclusion Bodies; D008029:Lighting; D008297:Male; D008854:Microscopy, Electron; D009940:Organoids; D010870:Pineal Gland / Q000166:cytology*; D011247:Pregnancy; D012737:Sex Factors