Communication between lymphocytes.
D002450:Cell Communication; D000939:Epitopes; D006801:Humans; D007111:Immunity, Cellular; D007694:Killer Cells, Natural / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology / Q000502:physiology*; D008285:Major Histocompatibility Complex; D013601:T-Lymphocytes / Q000276:immunology
D000939:Epitopes