[Telomerase: immortalization without malignization].
D000818:Animals; D017209:Apoptosis; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D002478:Cells, Cultured / Q000201:enzymology; D004314:Down Syndrome / Q000235:genetics; D006801:Humans; D051379:Mice; D009369:Neoplasms / Q000201:enzymology / Q000235:genetics; D019098:Telomerase / Q000235:genetics / Q000502:physiology; D014407:Tumor Cells, Cultured / Q000201:enzymology