title: Aging of chick embryo fibroblasts in vitro--I. Saturation density and population doubling rate.
mesh_terms: D000818:Animals; D002452:Cell Count; D002455:Cell Division; D002478:Cells, Cultured; D002642:Chick Embryo / Q000166:cytology*; D005347:Fibroblasts / Q000166:cytology*; D013997:Time Factors