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Titlesort descending Definition
B-Lymphocytes / B-Cells The type of lymphocyte that is responsible for the humoral immune response. It matures in the bone marrow and migrates to the tissues of the lymph system where it waits to be stimulated by a foreign antigen to produce antibodies. B-cells are antigen-specific, meaning that they only respond to one antigen. Because the spleen and lymph nodes have a large volume of blood passing through them, these organs are rich in B-cells, increasing the lymphocytes' subsequent exposure to new antigens.
Bacteremia The presence of viable bacteria in the blood.
Bioavailability The proportion of an administered drug that enters general circulation and is available for use by the body. Depending on the drug's method of action and purpose, intramuscular and subcutaneous injections may result in a lower bioavailability of the drug than would an intravenous injection.
Bone Marrow The soft, spongy tissue in the center of large bones that produces white blood cells, red blood cells and platelets.
Bone Marrow Transplant (BMT) A medical procedure in which bone marrow is removed from one person and transplanted in another in order to stimulate production of blood cells. It is used to treat malignancies, certain forms of anemia, and immune deficiencies. IVIG may be used during the course of BMT treatment.