Scientists in Brazil have taken a promising step toward supercharging cancer-fighting immune cells. Credit: Shutterstock Researchers in Brazil are advancing a promising form of cancer immunotherapy by making natural killer (NK) cells more powerful and precise. In a recent study, scientists at the Ribeirão Preto Blood Center and the Center for Cell-Based Therapy (CTC) used the NK-92 cell line to test new designs of chimeric antigen receptors (CARs). These engineered receptors included specific