Promyelocyte
| Promyelocyte | |
|---|---|
 Promyelocyte from bone marrow examination
| |
| Details | |
| Precursor | Myeloblast |
| Gives rise to | Myelocyte |
| Location | Bone marrow |
| Identifiers | |
| TH | H2.00.04.3.04003 |
| Anatomical terms of microanatomy | |
A promyelocyte (or progranulocyte) is a granulocyte precursor, developing from the myeloblast and developing into the myelocyte. Promyelocytes measure 12–20 microns in diameter. The nucleus of a promyelocyte is approximately the same size as a myeloblast but their cytoplasm is much more abundant. They also have less prominent nucleoli than myeloblasts and their chromatin is more coarse and clumped. The cytoplasm is basophilic and contains primary red/purple granules.
Additional images
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![Bone marrow smear from a patient with acute promyelocytic leukemia, showing characteristic abnormal promyelocytes.[2]](//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Cytology_of_acute_promyelocytic_leukemia%2C_annotated.png/120px-Cytology_of_acute_promyelocytic_leukemia%2C_annotated.png)
Bone marrow smear from a patient with acute promyelocytic leukemia, showing characteristic abnormal promyelocytes. -
Hematopoiesis -
Basophilic promyelocyte -
Eosonophilic promyelocyte -
Neutrophilic promyelocyte
![Bone marrow smear from a patient with acute promyelocytic leukemia, showing characteristic abnormal promyelocytes.[2]](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Cytology_of_acute_promyelocytic_leukemia%2C_annotated.png/120px-Cytology_of_acute_promyelocytic_leukemia%2C_annotated.png)
