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A 20-year study may upend long-held theory about chromosomes and cancer

by  Johns Hopkins University School of Medicine Illustration of the link between short telomeres and squamous cancer. Credit: Jennifer Fairman Johns Hopkins Medicine scientists say their 20-year study of more than 200 people with premature aging syndromes caused by abnormally short telomeres, or shortened repetitive DNA sequences at the ends of chromosomes, may upend long-held scientific...