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| basophil |
a tissue, substance, or cell, esp. a white blood cell, that readily takes on basic dyes. |
| B cell |
a type of white blood cell, produced in the bone marrow, that makes antibodies that fight off disease. |
| corpuscle |
a cell that moves freely in the blood, esp. one of the red or white blood cells. [1/2 definitions] |
| leukemia |
any of a group of cancers of bone marrow, usu. resulting in an abnormally high production of white blood cells. |
| leukocytosis |
a large temporary increase in the number of white blood cells in the blood, due esp. to infection or pregnancy rather than leukemia. |
| lymph |
a transparent, usu. yellowish liquid produced by body tissues that is rich in white blood cells. |
| lymphocyte |
one variety of white blood cells produced by the lymphatic system. |
| macrophage |
a white blood cell that engulfs and digests microbes, cancer cells, and foreign substances. |
| pus |
a thick white or yellow liquid that forms around infections and that contains white blood cells. |
| spleen |
a ductless organ on the left side near the stomach, which filters and stores blood, destroys certain worn-out red blood cells, and produces certain white blood cells of the immune system. [1/2 definitions] |
| thymus |
a vestigial ductless gland or glandular structure found in vertebrates, usu. at the base of the neck, that is active during childhood in modifying white blood cells and building resistance to disease, but becomes inactive in the adult. |
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