NCIt definition : Human peripheral blood lymphocytes (PBL) isolated from a patient, exposed to the tumor-associated
protein ESO-1 in vitro, and then transferred back to the same patient to target tumor
cells expressing ESO-1. ESO-1 is a human self-antigen expressed by melanomas. The
ESO-1 gene encodes several MHC class I- and MHC class II-restricted epitopes that
may activate cytotoxic T-cell-mediated tumor destruction. (NCI04);