Telomeres are DNA-nucleoprotein structures that protect the ends of human chromosomes through the formation of a ‘cap’ that prevents exonucleolytic degradation, inter- & intra-chromosomal fusion and subsequent chromosomal instability. Telomerase, the ribonucleoprotein enzyme that maintains linear chromosomal DNA ends by the addition of TTAGGG repeats, is completely repressed or present only at low ...