erythroblast (redirected from basophilic erythroblast)

erythroblast /eryth·ro·blast/ (ĕ-rith´ro-blast) originally, any nucleated erythrocyte, but now more generally used to designate a nucleated precursor cell in the erythrocytic series (q.v.). Four developmental stages in the series are recognized: the proerythroblast (q.v.), the basophilic e., in which the cytoplasm is basophilic, the nucleus is large with clumped chromatin, and the nucleoli have disappeared; the polychromatophilic e., in which the nuclear chromatin shows increased clumping and the cytoplasm begins to acquire hemoglobin and takes on an acidophilic tint; and the orthochromatic e., the final stage before nuclear loss, in which the nucleus is small and ultimately becomes a blue-black, homogeneous, structureless mass.

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e·ryth·ro·blast (-rthr-blst)

n.

Any of the nucleated cells normally found in bone marrow that develop into red blood cells.

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e·rythro·blastic adj.

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erythroblast

[erith′rəblast′]

an immature form of a red blood cell. It is normally found only in bone marrow and contains hemoglobin.

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erythroblast [ĕ-rith´ro-blast]

a term originally used for any type of nucleated erythrocyte, but now usually limited to one of the nucleated precursors of an erythrocyte, i.e. one of the developmental stages in the erythrocytic series, in contrast to a megaloblast. In this usage, it is called also normoblast.

basophilic erythroblast a nucleated precursor in the erythrocytic series, preceding the polychromatophilic erythroblast and following the proerythroblast; the cytoplasm is basophilic, the nucleus is large with clumped chromatin, and the nucleoli have disappeared. Called also basophilic normoblast.

orthochromatic erythroblast see normoblast.

polychromatic erythroblast (polychromatophilic erythroblast) see normoblast.

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erythroblast

originally, any nucleated erythrocyte, but now more generally used to designate the nucleated precursor from which an erythrocyte develops.

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basophilic erythroblast

see normoblast.

orthochromatic erythroblast

see normoblast, metarubricyte.

polychromatophilic erythroblast

see normoblast.