- See also changes related to Leukocyte, or pages that link to Leukocyte or to this page or whose text .
- Blood : The body fluid that circulates in the vascular system (i.e., blood vessels). Whole blood includes plasma and blood cells.
- Immunology : The study of all aspects of the immune system in all animals.
- Basophil : A circulating leukocyte which, when sensitized to a specific antigen by means of an immunoglobulin E molecule bound to its surface, will release physiologically potent chemicals on recognizing that antigen
- Eosinophil : A leukocyte (white blood cell), the number of which rise in inflammatory disorders and parasitic infections
- Lymphocyte : Leukocyte originating in lymphoid tissues, fundamental to the immune system, regulating and participating in acquired immunity, with receptor molecules on its surface that bind to a specific antigen.
- Neutrophil : Leukocytes (white blood cells) whose primary role is in the cell-mediated immune system, where they destroy hostile substance by phagocytosis. They do release interleukin-12.
- Granulocyte : Leukocytes with large numbers of granules in their cytoplasm, differentiated by their staining into eosinophils, neutrophils, and basophils
- Macrophage : A type of leukocyte (i.e., white blood cells) that is associated with chronic inflammatory response. It digests foreign cells using the mechanism of phagocytosis, and both circulates in the blood, but later attaches to tissue as a part of local immune response.
- Granulocyte-macrophage colony-stimulating factor : Naturally occurring protein that stimulates the production of granulocytes and macrophages by stem cells and is used as a drug by some immunosuppressed individuals.
- Stem cell : Describes cells that have the potential to differentiate to new cell types; usually encompasses totipotent, pluripotent and multipotent cells.
- Bone marrow : The soft tissue, inside the hollow cavities of bones, which produces blood cells
- Mast cell : Non-circulating, but leukocyte-like (especially basophil) associated with the inflammatory response, especially the release of histamine.
- Immunoglobulin : Proteins produced by lymphocytes, which are primarily antibodies to attack material the body considers hostile, although some may act as cytokines, signaling to other cells
- Cytokines : The chemical messengers of the immune system, primarily but not exclusively carried in blood
- Hematopoietic stem cell transplant : Transplantation of blood stem cells derived from the bone marrow or blood, most often performed for people with diseases of the blood and cancer.
- Red blood cell : Add brief definition or description