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Newsletter Terminology Practice Test

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Immature white blood cell precursors in the bone marrow that normally mature into granulocytes; increased numbers may indicate bone marrow disorders.
Correct Answer:
Myelocytes
Explanation:
Myelocytes are immature granulocyte precursors in the bone marrow that normally mature into granulocytes. An increased number of these cells indicates the marrow is producing more granulocytes than usual, which can signal bone marrow disorders or a stress response in the myeloid lineage. Lymphocytes, erythrocytes, and platelets come from different lineages and do not mature into granulocytes, so they don’t fit the description of immature granulocyte precursors.

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