title: Summation of the biologic aspects of the congress.
authors.affiliation: Department of Medicine, Beth Israel Hospital and Harvard Medical School, Boston, Massachusetts 02215.
authors.forename: T B
authors.initials: TB
authors.lastname: Strom
mesh_terms: D000818:Animals; D006801:Humans; D008285:Major Histocompatibility Complex; D008954:Models, Biological; D013601:T-Lymphocytes / Q000276:immunology; D014180:Transplantation / Q000502:physiology*; D014181:Transplantation Immunology; D014183:Transplantation, Heterologous / Q000276:immunology