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Created page with "== Introduction == Telomerase is a ribonucleoprotein enzyme that adds DNA sequence repeats to the 3' end of DNA strands in the telomere regions, which are found at the ends of eukaryotic chromosomes. This addition of repeated sequences replenishes the telomere 'end-replication problem' that is caused by the shortening of chromosomes during replication. Telomerase is active in gametes and most cancer cells, but is normally absent from,..."
