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 ?
Other features noted in bone marrow in HIV patients include numerous bare megakaryocyte nuclei, polymorphic lymphoid aggregates, gelatinous degeneration, deteached nuclear fragments in granulocytes and giant metamyelocytes in the absence of megaloblastosis.
9 g/dl, total leukocyte counts/cumm, 121000 [+ or -] 35000 /cumm differential leukocyte count % including mature leucocytes 43% such as neotrophils 21 [+ or -] 7, lymphocyte 8 [+ or -] 2, eosinophils 9 [+ or -] 2, monocytes 5 [+ or -] 3 and immature cells 57% composed of Blast 18 [+ or -] 12, promylocytes 4 [+ or -] 1, Myelocytes 25 [+ or -] 5, Metamyelocytes 9 [+ or -] 2, band cells 13 [+ or -] 3 platelet counts / cumm, 285000 [+ or -] 220000 / cumm respectively were noted in the present study (Table 1).
1]) accompanied by an increase in the concentration of metamyelocytes (194 cells [micro][L.
9]/L with 62% neutrophils, 14% stab cells, 6% metamyelocytes, 4% myelocytes, and 14% lymphocytes; mean corpuscular volume, 87 fL; and platelet count, 415x[10.
Moreover, occasional metamyelocytes and nucleated red blood cells were also noted.
Maturation occurs in a post-mitotic compartment, and is made up of metamyelocytes, band forms and mature neutrophils, and allows the cells to reach full functional state prior to the release into the circulation: also called the labile compartment or pool.
17,18 Myeloid precursors show giant myelocytes and metamyelocytes and hyper - pigmented neutrophils.
2 %) Platelets (thou/ul) 180 (140-450 THO/UL) Neutrophils (%) 33 (40-75 %) Lymphocytes (%) 64 (20-45 %) Eosinophils (%) 0 (1-6 %) Metamyelocytes (%) 1 (0) Monocytes (%) 2 (4-13 %) Basophils (%) 0 (0-1%) PT (sec) 20.
HL-60 promyelocytic leukemia cells (passage number between 2 and 10) were differentiated into metamyelocytes using DMSO to enable production of higher levels of [LTB.
Dysplastic changes seen included the presence of giant metamyelocytes and giant banded heterophils.
The most frequently infected blood cells are monocytes, however, infections in other cell types have been described, including lymphocytes, atypical lymphocytes, promyelocytes, metamyelocytes, and band and segmented neutrophils (10,35-37).
In addition, the laboratory reported 16 nucleated red blood cells (RBCs), 2 atypical lymphocytes, 2 metamyelocytes, 3.