title: Proliferation of epithelial cells in the adult primate choroid plexus.
abstract: An adult rhesus monkey was injected intraperitoneally with [H3] thymidine (2.3 microCi/gram body weight) and perfused 90 minutes later with a mixture of aldehydes. One and a half micrometer plastic sections were then cut and dipped into liquid emulsion for radioautography. Labeled cells were observed in the choroid plexus of the anterior lateral ventricle; cell identification was evaluated using electron micrographs taken from serial thin sections of re-embedded. radioautographic 1.5-micron sections. The ultrastructure and location of both mitotic figures and labeled cells confirmed the presence of undifferentiated basal choroid plexus epithelial cells in the adult primate central nervous system.
mesh_terms: D000818:Animals; D002455:Cell Division; D002831:Choroid Plexus / Q000166:cytology*; D004247:DNA / Q000096:biosynthesis; D004847:Epithelial Cells; D008253:Macaca mulatta; D008297:Male; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D004247:DNA; D013936:Thymidine