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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a stew of meat, vegetables, potatoes, etc. |
white blood cell n.
Abbr. WBC
Any of the colorless or white cells in the blood that have a nucleus and cytoplasm and help protect the body from infection and disease through specialized neutrophils, lymphocytes, and monocytes. Also called leukocyte, white corpuscle.
| white blood cell (wīt) Pronunciation Key
Any of various white or colorless cells in the blood of vertebrate animals, many of which participate in the inflammatory and immune responses to protect the body against infection and to repair injuries to tissues. White blood cells are formed mainly in the bone marrow, and unlike red blood cells, have a cell nucleus. The major types of white blood cells are granulocytes, lymphocytes, and monocytes. White blood cells are far less numerous in the blood than red blood cells, but their amount usually increases in response to infection and can be monitored as part of a clinical assessment. Also called leukocyte. |
Colorless cells in the blood that help combat infection. Some white blood cells act as scavengers by engulfing foreign particles (such as bacteria) and destroying them. Others produce antibodies or destroy dead cells. (See AIDS.)