title: Studies on the two-signal model for T cell activation in vivo.
mesh_terms: D000818:Animals; D006087:Graft vs Host Reaction; D016381:Islets of Langerhans Transplantation; D008213:Lymphocyte Activation; D051379:Mice; D008807:Mice, Inbred BALB C; D008815:Mice, Inbred Strains; D013601:T-Lymphocytes / Q000276:immunology* / Q000637:transplantation; D014184:Transplantation, Homologous