
| myeloblast, myelo+, myelination | |
| myeloid, myeloma, myeloma protein |
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.
A young white blood cell found in the bone marrow.
| Myelocyte | |
|---|---|
| Code | TH H2.00.04.3.04004 |
A myelocyte is a young cell of the granulocytic series, occurring normally in bone marrow, but not in circulating blood (except when caused by certain diseases).
|
Contents
|
When stained with the usual dyes, the cytoplasm is distinctly basophilic and relatively more abundant than in myeloblasts or promyelocytes, even though myelocytes are smaller cells.
Numerous cytoplasmic granules are present in the more mature forms of myelocytes. Neutrophilic and eosinophilic granules are peroxidase-positive, while basophilic granules are not.
The nuclear chromatin is coarser than that observed in myelocyte, but it is relatively faintly stained and lacks a well defined membrane.
The nucleus is fairly regular in contour (not indented), and seems to be 'buried' beneath the numerous cytoplasmic granules. (If the nucleus were indented, it would likely be a metamyelocyte.)
Myelocytes are derived from promyelocytes and give rise to metamyelocytes.
There is an internationally agreed method of counting blasts, with results from M1 upwards.
|
||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||
| This cell biology article is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)