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Basophil Meaning and Definition in Dictionary

Definitions from Wordnet 2.0

  • a leukocyte with basophilic granules easily stained by basic stains

Definitions from Wiktionary

  • a leukocyte with basophilic granules easily stained by basic stains

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Basophil Meaning and Definition in Wikipedia

Basophils, or basophil granulocytes, are rare granulocytes. If you had 10,000 white blood cells, only 1–30 of them would be basophils.

Basophils contain large cytoplasmic granules. When stained, the granules hide the cell nucleus from sight. However, when unstained, the nucleus is visible and it usually has two lobes.

The mast cell, another granulocyte, is similar in appearance and function. Both cell types store histamine, a chemical that is secreted by the cells when stimulated. However, they come from different cell lines. Mast cells usually do not circulate in the blood stream, but instead stay in connective tissue. Like all circulating granulocytes, basophils go from the blood into a tissue when needed.

The name comes from the fact that these leukocytes are basophilic, i.e., they are stained by basic dyes, as shown in the illustrations.

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