What is the earliest myeloid precursor before cell lineage distinction?

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Multiple Choice

What is the earliest myeloid precursor before cell lineage distinction?

Granulopoiesis advances from an undifferentiated myeloid progenitor to a series of recognizable precursors, with the earliest stage committed to the granulocytic lineage being the myeloblast. This cell lacks cytoplasmic granules and has a high nuclear-to-cytoplasmic ratio with prominent nucleoli, representing the initial myeloid precursor before any lineage-specific features appear. As development continues, the promyelocyte appears and already contains primary granules, signaling the start of granulocytic differentiation. Subsequent stages—the myelocyte, metamyelocyte, and beyond—show progressively more differentiation and granule formation. Thus, the myeloblast is the earliest myeloid precursor prior to lineage-distinguishing features.

Granulopoiesis advances from an undifferentiated myeloid progenitor to a series of recognizable precursors, with the earliest stage committed to the granulocytic lineage being the myeloblast. This cell lacks cytoplasmic granules and has a high nuclear-to-cytoplasmic ratio with prominent nucleoli, representing the initial myeloid precursor before any lineage-specific features appear. As development continues, the promyelocyte appears and already contains primary granules, signaling the start of granulocytic differentiation. Subsequent stages—the myelocyte, metamyelocyte, and beyond—show progressively more differentiation and granule formation. Thus, the myeloblast is the earliest myeloid precursor prior to lineage-distinguishing features.

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