metamyelocyte


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metamyelocyte

 [met″ah-mi´ĕ-lo-sīt″]
a precursor in the granulocytic series, being a cell intermediate in development between a promyelocyte and the mature, segmented (polymorphonuclear) granular leukocyte, and having a U-shaped nucleus.

met·a·my·el·o·cyte

(met-ă-mī'el-ō-sīt),
A transitional form of myelocyte with nuclear construction that is intermediate between the mature myelocyte (myelocyte C of Sabin) and the two-lobed granular leukocyte.
Synonym(s): juvenile cell
[meta- + G. myelos, marrow, + kytos, cell]

metamyelocyte

/meta·my·elo·cyte/ (-mi´il-o-sīt″) a precursor in the granulocytic series, being a cell intermediate in development between a promyelocyte and the mature, segmented (polymorphonuclear) granular leukocyte, and having a U-shaped nucleus.

metamyelocyte

[met′əmī′əlōsīt′]
Etymology: Gk, meta + myelos, marrow, kytos, cell
a stage in the development of the granulocyte series of leukocytes, between the myelocyte stage and the neutrophilic band. See also leukocyte, myeloblast, myelocyte.
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Metamyelocyte

metamyelocyte

A cell similar in shape, but slightly smaller (10 to 16 µm in diameter) than a myelocytes, which has a central or eccentric, indented kidney bean nucleus. The chromatin is usually coarsely clumped, and there is no nucleolus; the N:C ratio is 1.5:1 to 1:1. The abundant, pink or colourless cytoplasm may contain rare reddish-purple azurophilic (primary) granules and/or many fine, lilac, neutrophilic (secondary/specific) granules.

The metamyelocyte corresponds to the M5 stage of a maturing granulocyte, which is morphologically between a myelocyte (M3 or M4) and a PMN (M6 or M7).

met·a·my·e·lo·cyte

(met'ă-mī'ĕ-lō-sīt)
A transitional form of myelocyte with nuclear construction that is intermediate between the mature myelocyte (myelocyte C of Sabin) and the two-lobed granular leukocyte.
Synonym(s): juvenile cell.
[meta- + G. myelos, marrow, + kytos, cell]

metamyelocyte

a precursor in the granulocytic series, being a cell intermediate in development between a promyelocyte and the mature, segmented (polymorphonuclear) granular leukocyte, between the myelocyte and the band stage, and having a U-shaped nucleus.
References in periodicals archive ?
Pluripotential stem cell Myeloid Progenitors Myeloblast Monoblasts Marrow pool Mitotic Promelocytes Promonocytes precursors Myelocytes Post-mitotic Metamyelocytes bands Blood and Neutrophils, Monocytes tissue eosinophils and function basophils Innate Macrophage immunologic function Progenitors Megakaryocyte Erythroid Lymphoid Marrow pool Mitotic Maturing Normoblasts Pre-B precursors megakaryocytes Post-mitotic Reticulocytes B lymphoblast Blood and Platelets Erythrocytes B tissue lymphocytes function and plasma cells Haemostasis Oxygen Adaptive transport immunologic function Progenitors Marrow pool Mitotic Pro-T precursors Post-mitotic Lymphoblast Blood and T-lymphocytes tissue and NK cells function Fig.
The IG parameter on the Sysmex XT-Series Automated Hematology Analyzers provides a quantitative immature granulocyte count for metamyelocytes, myelocytes and promyelocytes by utilizing Sysmex's patented fluorescent flow cytometry technology.
9]/L with 50% polymorphonuclear leukocytes, 18% band forms, 3% myelocytes, and 1% metamyelocytes.
8 White cell count (per mL) 21,300 Differential count (%) Neutrophils 31 Lymphocytes 45 Bands 12 Myelocytes 4 Metamyelocytes 2 Reactive lymphocytes 5 Platelet count (per mL) 156,000 Prothrombin time (s) 25.
However, morphologic examination of the isolated cells on a cytospin preparation showed the presence of large amounts of granulocytes (37% metamyelocytes, 26% band neutrophils, 17% neutrophils, 15% lymphocytes, and 5% monocytes).
The CML chronic phase classically presents with neutrophilic leukocytosis with an increased percentage of myelocytes, metamyelocytes, bands, and segmented neutrophils (7).
New hematology analyzers now report these automatically in the WBC differential as immature granulocytes, reflecting the presence of metamyelocytes, myelocytes, and promyelocytes in the sample.
Bone marrow aspiration showed hypercellularity, with 45% myeloblasts, 15% promyelocytes, 7% myelocytes, 4% metamyelocytes, 1% eosinophils, 2% neutrophils, 15% lymphocytes, and 11% normoblasts.
The positive smear result was defined as per the International Consensus Group criteria, which included RBC morphology at 2+ or greater, malaria, giant PLTs at moderate or greater, PLT clumps at greater than rare/occasional, Dohle bodies/ toxic granulation/vacuoles at moderate or greater, blasts at 1 or greater, metamyelocytes at greater than 2, myelocytes/promyelocytes at 1 or greater, atypical lymphocytes at greater than 5, NRBCs at 1 or greater, or plasma cell at 1 or greater.
Lab work revealed a white cell count of 14,600/[micro]L with 79% neutrophils, 5% bands, 1% metamyelocytes, 11% lymphocytes.
Precursor cells from myeloid blast cells through to metamyelocytes were counted together as immature granulocytes.
9]/L, with 61% neutrophils, 22% bands, 3% metamyelocytes, 3% myelocytes, 10% lymphocytes, and 1% monocytes, with no blasts detected.