title: Growth of the cartilages of the mid-line cranial base: an autoradiographic study using tritium labelled thymidine.
abstract: Proliferative and kinetic activity of chondrocytes in five sites of endochondral growth in the mid-line cranial base of the rat have been studied using a single injection of 3H-thymidine in animals aged 4-80 days. The marked caudorostral gradient and temporal gradient of the labelling index and labelling profiles is indicative of a proliferative activity specific to each endochondral growth site. Measurements of the growth rate indicate that each growth site in the cranial base bones has a specific growth rate.
mesh_terms: D000375:Aging; D000818:Animals; D001345:Autoradiography; D002356:Cartilage / Q000254:growth & development*; D051381:Rats; D011919:Rats, Inbred Strains; D012886:Skull / Q000254:growth & development*; D013936:Thymidine; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine