Which of the following is NOT considered a granulocyte?

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Enhance your NBEO Histology Test preparation skills with our quiz. Dive into multiple choice questions explained with hints and detailed answers. Ace your NBEO exam with confidence!

Multiple Choice

Which of the following is NOT considered a granulocyte?

Explanation:
Granulocytes are white blood cells that show visible cytoplasmic granules when stained. The classic trio of granulocytes includes neutrophils, eosinophils, and basophils, each with distinct granule contents and nuclear shapes. Macrophages come from monocytes and belong to the mononuclear phagocyte system; they do not have the prominent cytoplasmic granules that define granulocytes and are considered agranulocytes. Instead, macrophages are large phagocytic cells with a single, typically kidney-shaped nucleus and lysosomes for digestion, and they specialize in engulfing larger particles and presenting antigen to T cells. Therefore, macrophages are not granulocytes.

Granulocytes are white blood cells that show visible cytoplasmic granules when stained. The classic trio of granulocytes includes neutrophils, eosinophils, and basophils, each with distinct granule contents and nuclear shapes. Macrophages come from monocytes and belong to the mononuclear phagocyte system; they do not have the prominent cytoplasmic granules that define granulocytes and are considered agranulocytes. Instead, macrophages are large phagocytic cells with a single, typically kidney-shaped nucleus and lysosomes for digestion, and they specialize in engulfing larger particles and presenting antigen to T cells. Therefore, macrophages are not granulocytes.

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