Antilymphocyte Serum

**Semantic type:** Immunologic Factor|Pharmacologic Substance

**Definition:** Immunoglobulins raised xenogeneically against lymphocyte populations. It is used both as a test for histocompatibility and in conjunction with other immunosuppressive agents to suppress rejection of grafts or organ transplants.

**Synonyms:** - ALG - ALS - Antilymphocyte Globulin