combined immunological deficiency disease [kǝm`bīnd ´im·yǝ·nǝ`läj·ǝ·kǝl dǝ`fish·ǝn·sē di´zēz] MEDICINE A severe and usually fatal disease in which the individual lacks not only the T (thymus-derived) cells, which are responsible for graft rejection and for defense against viruses, but also the B (bone-marrow-derived) cells, which are responsible for production of globulins and antibodies. Also known as CID disease. |