CD8A and lymphangioma: Polyclonal and monoclonal T cells generated from infected mice that are specific for this epitope provide protective immunity against Listeriosis (Harty & Pamer, 1995); CD8+ L9.6 transgenic T cell receptor, specific for p60 217–225, presented in the context of H2-Kd, was cloned from monoclonal T cells protective against LM (Harty & Pamer, 1995).