Andere Kunden interessierten sich auch für
![Anatomy on peripheral lymph nodes of Mizo local pig]( "Anatomy on peripheral lymph nodes of Mizo local pig")
Anatomy on peripheral lymph nodes of Mizo local pig23,99 €![Effect of Heat Stress on the Core Body Temperature and effect of Temperature Stress on Thyroid Function in Normal Adults Rats]( "Effect of Heat Stress on the Core Body Temperature and effect of Temperature Stress on Thyroid Function in Normal Adults Rats")
Effect of Heat Stress on the Core Body Temperature and effect of Temperature Stress on Thyroid Function in Normal Adults Rats27,99 €![Study the Pathogenesis of E. coli O157:H7 in Experimental Inoculated]( "Study the Pathogenesis of E. coli O157:H7 in Experimental Inoculated")
Study the Pathogenesis of E. coli O157:H7 in Experimental Inoculated46,99 €![Clinical anatomy of the thorax of dog]( "Clinical anatomy of the thorax of dog")
Clinical anatomy of the thorax of dog32,99 €![Neoplastic and non-neoplastic tumors in Equidae of load and traction]( "Neoplastic and non-neoplastic tumors in Equidae of load and traction")
Neoplastic and non-neoplastic tumors in Equidae of load and traction26,99 €![Studies on some clinicotherapeutic aspects of hepatic disorders in dog]( "Studies on some clinicotherapeutic aspects of hepatic disorders in dog")
Studies on some clinicotherapeutic aspects of hepatic disorders in dog32,99 €![Propofol As A General Anaesthetic In Dog]( "Propofol As A General Anaesthetic In Dog")
Propofol As A General Anaesthetic In Dog26,99 €
One of the several differences between a normal and a neoplastic cell is that there is a physiological limit to the number of possible cell replications in the former, whereas it appears to be unlimited in the latter. For this reason, cancer cells are thought to undergo a phenomenon of immortalization. The chromosome extremities contain structurally defined elements called telomeres. In normal somatic cells, each mitotic cycle leads to a reduction of telomere length until a critical point is reached. Telomere erosion to this critical length presents a signal for the cell to arrest further divisions and to undergo cellular senescence or to activate apoptosis. Telomeres that avoid critical shortening could, theoretically, replicate endlessly, thereby immortalizing the cell. One mechanism to restore telomere length is the activation of a specific reverse transcriptase called telomerase. Up-regulation of the telomerase enzyme provides immortalizing capacity to neoplastic cells.