title: Predictions of the somatic mutation and mortalization theories of cellular ageing are contrary to experimental observations.
mesh_terms: D002470:Cell Survival; D002478:Cells, Cultured; D005347:Fibroblasts / Q000166:cytology; D005796:Genes; D006801:Humans; D008954:Models, Biological; D009154:Mutation; D013936:Thymidine / Q000378:metabolism
chemical_list: D013936:Thymidine