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Multiple Choice

In the eosinophil lineage, which stage is described as having an indented nucleus with orange granules?

In eosinophil maturation, the nucleus becomes increasingly indented as cells progress from the myeloid stages toward maturity, and eosinophilic (orange) granules appear in the developing cells. The metamyelocyte is the stage where you see a clearly indented (kidney-shaped) nucleus along with eosinophilic granules, giving the orange coloration. A promyelocyte would have prominent granules but not an indented nucleus; a band cell has a band-shaped, not indented, nucleus; and a mature eosinophil has a bilobed nucleus rather than a single indentation. Therefore, the described features point to the metamyelocyte stage.

In eosinophil maturation, the nucleus becomes increasingly indented as cells progress from the myeloid stages toward maturity, and eosinophilic (orange) granules appear in the developing cells. The metamyelocyte is the stage where you see a clearly indented (kidney-shaped) nucleus along with eosinophilic granules, giving the orange coloration. A promyelocyte would have prominent granules but not an indented nucleus; a band cell has a band-shaped, not indented, nucleus; and a mature eosinophil has a bilobed nucleus rather than a single indentation. Therefore, the described features point to the metamyelocyte stage.