antilymphocyte serum an·ti·lym·pho·cyte serum (ān'tē-lĭm'fə-sīt', ān'tī-)
n.
Abbr. ALS The globulin fraction of serum from a horse or another animal, usually used in conjunction with other immunosuppressive agents to suppress rejection of grafts or organ transplants.
| a fool or simpleton; ninny. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
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