myelocyte


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myelocyte

 [mi´ĕ-lo-sīt″]
1. a precursor in the granulocytic series intermediate between a promyelocyte and a metamyelocyte, normally occurring only in the bone marrow. In this stage, differentiation into specific cytoplasmic granules has begun.
2. any cell of the gray matter of the nervous system. adj., adj myelocyt´ic.

my·e·lo·cyte

(mī'ĕ-lō-sīt),
1. A young cell of the granulocytic series, occurring normally in bone marrow, but not in circulating blood (except in certain diseases). When stained with the usual dyes, the cytoplasm is distinctly basophilic and relatively more abundant than in myeloblasts or promyelocytes, even though myelocyte's are smaller cells; numerous cytoplasmic granules (that is, neutrophilic, eosinophilic, or basophilic) are present in the more mature forms of myelocyte's, and the first two types are peroxidase positive. The nuclear chromatin is coarser than that observed in myeloblasts, but it is relatively faintly stained and lacks a well-defined membrane; the nucleus is fairly regular in contour (that is, not indented), and seems to be "buried" beneath the numerous cytoplasmic granules.
2. A nerve cell of the gray matter of the brain or spinal cord. Synonym(s): medullocell
[myelo- + G. kytos, cell]

myelocyte

/my·elo·cyte/ (mi´ĕ-lo-sīt″) a precursor in the granulocyte series, being a cell intermediate in development between a promyelocyte and a metamyelocyte.myelocyt´ic

myelocyte

(mī′ə-lə-sīt′)
n.
A large cell of the bone marrow that is a precursor of the mature granulocyte of the blood.

my′e·lo·cyt′ic (-sĭt′ĭk) adj.

myelocyte

[mī′əlōsīt′]
Etymology: Gk, myelos + kytos, cell
the third of the maturation stages of the granulocytic leukocytes normally found in the bone marrow. Granules are visible in the cytoplasm. The nuclear material of the myelocyte is denser than that of the myeloblast. Myelocytes appear on peripheral blood films in chronic myelogenous leukemia or in severe infection. Compare myeloblast. myelocytic, adj.
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Myelocyte

myelocyte

A round to oval, variably sized (10–18 µm in diameter) cell found in the bone marrow and peripheral circulation, which is generally smaller than a promyelocyte, and has an occasionally flattened or indented, central or eccentric nucleus generally lacking a nucleolus with variable chromatin clumping. The N:C ratio is 2:1 to 1:1. The cytoplasm is abundant, stains bluish-pink, light pink, or is colourless; it contains some reddish-purple azurophilic (primary) granules and/or numerous fine, lilac, specific (secondary) granules.

my·e·lo·cyte

(mī'ĕ-lō-sīt)
1. A young cell of the granulocytic series, occurring normally in bone marrow, but not in circulating blood. When stained, the cytoplasm is distinctly basophilic and more abundant than in myeloblasts or promyelocytes; numerous cytoplasmic granules are present in the more mature forms. The nucleus is regular in contour, i.e., not indented, and seems to be "buried" beneath the numerous cytoplasmic granules.
2. A nerve cell of the gray matter of the brain or spinal cord.
[myelo- + G. kytos, cell]

myelocyte

An immature white blood cell normally found in the bone marrow.

my·e·lo·cyte

(mī'ĕ-lō-sīt)
1. A young cell of the granulocytic series, occurring normally in bone marrow, but not in circulating blood.
2. A nerve cell of the gray matter of the brain or spinal cord.
[myelo- + G. kytos, cell]

myelocyte (mi´əlosīt),

n a young white blood cell found in the bone marrow.

myelocyte

1. a precursor in the granulocytic series intermediate between a promyelocyte and a metamyelocyte, normally occurring only in the bone marrow. In this stage, differentiation into specific cytoplasmic granules has begun.
2. any cell of the gray matter of the nervous system.
References in periodicals archive ?
3], with a differential of 18% segmented forms, 5% band cells, 45% lymphocytes, 27% monocytes, 2% metamyelocytes, and 3% myelocytes.
The IG parameter for the Sysmex XE-2100(TM) Automated Hematology Analyzer, which is reportable only with Sysmex's IG Master software, provides a quantitative immature granulocyte count for metamyelocytes, myelocytes and promyelocytes via the detection in the XE-2100's Differential Channel.
3] (1% myelocytes, 2% metamyelocytes, 20% band forms, 60% neutrophils, 6% lymphocytes, 4% monocytes, and 7% eosinophils) and a platelet count of 162,000/[mm.
German scientist Victor Schilling (1883-1960) differentiated neutrophils into categories based upon their morphology, which included "myelozyten, jugendliche, stabkernige und segmentkernige," translated myelocytes, metamyelocytes, bands and segmented neutrophils.
Leukocytosis is invariably present at diagnosis with less than 5% myeloblasts and varying numbers of promyelocytes, myelocytes, metamyelocytes, basophils, and neutrophils (Slide 1).
6,7) An upgraded software package (XE-IG Master, Sysmex) allows users to obtain an extended differential WBC count with the addition of an immature granulocyte count, consisting of promyelocytes, myelocytes, and metamyelocytes, to the standard 5-part differential test.
9]/L, differential count constituted blasts 11 %, promyelocytes 2%, myelocytes 15%, metamyelocytes 17%, polymorphs 29%, lymphocytes 25%, and eosinophils 1 %.
If any blasts, abnormal lymphoid cells, other abnormal or unclassifiable cells, [greater than]1 nRBC, [greater than]5% immature granulocytes (metamyelocytes, myelocytes, or promyelocytes), or [greater than]5% reactive lymphocytes are seen, a manual differential must be performed.
His white blood cell count was 27 700/[micro]L with 61% blast cells, 10% myelocytes, 2% metamyelocytes, 5% band neutrophils, 9% segmented neutrophils, 10% lymphocytes, and 3% monocytes.
We studied the performance of the instrument in flagging "abnormal" samples and in flagging samples with immature granulocytes (IG = metamyelocytes, myelocytes, or promyelocytes).