| Namespace | MPheno.ontology | Obsolete | false |
| description | any structural anomaly of the principal cell of the pineal gland, characterized by two or more long cell processes ending in bulbous expansions that terminate in perivascular spaces surrounding capillaries; pinealocytes are secretory cells organized into cords and clusters resting on a basal lamina and surrounded by connective tissue, blood vessels lined by fenestrated endothelial cells, and nerves; their cytoplasm contains abundant mitochondria and multiple synaptic ribbons that are randomly distributed; the primary function of the pinealocytes is the secretion of melatonin; pinealocytes receive a direct innervation from sympathetic neurons that form recognizable synapses |
