New Haven, Conn. — Yale School of Medicine researchers have received $8.4 million to study how cancer cells mend their own chromosomes and DNA after damage caused by radiation and chemotherapy.The study funded by the National Institutes of Health (NIH) is the next step in developing targeted cancer therapies, said the lead researcher, Peter Glazer, M.D., chair of therapeutic radiology and leader of the radiobiology research program at Yale Cancer Center.