title: Age dependent production of a competence factor by human fibroblasts.
mesh_terms: D000375:Aging; D001792:Blood Platelets / Q000502:physiology; D002455:Cell Division; D002478:Cells, Cultured; D003470:Culture Media; D005347:Fibroblasts / Q000502:physiology*; D006133:Growth Substances / Q000096:biosynthesis* / Q000097:blood
chemical_list: D003470:Culture Media; D006133:Growth Substances