Researchers at the University of California at Irvine have developed a new immunotherapy screening technique that will allow doctors to target tumors without the side effects of standard cancer drugs, giving specialists the opportunity to create individualized cancer treatments. The tracking and screening system identifies T-cell receptors with 100 percent specificity for individual tumors, according to Lab On A Chip. Traditional cancer treatments typically offer a one-size-fits-all disease response, particularly chemotherapy drugs that can have serious side effects.