CD47 and lymphoma: Mice that survived a similar experiment—in which E.G7-hCD47 lymphoma model animals were treated with the combination of anti-CD47 antibody and OT-I T cells—were rechallenged with the E.G7-hCD47 cells or the parental EL4-hCD47 cells that did not express OVA, about 4 months after the initial tumor challenge (Fig. 6g).