medical Definition of antithymocyte globulin
: a mixture of usually IgG antibodies against human T cells that is derived from purified animal blood serum (as from a horse or rabbit) and is administered by intravenous injection especially to suppress immune system function (as to prevent rejection in kidney transplant)
- The immunosuppressive induction protocol included intravenous antithymocyte globulin …
- —Jean-Michel Dubernard, The New England Journal of Medicine, 13 Dec. 2007
