Blood Forming Organs

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BONE MARROW FUNCTION

Stem Cell
Reticuloendothelial Cell
Hemohistioblast
Hemocytoblast

THYMUS

LYMPH NODE
LYMPHATIC NODULI
SPLEEN

HEMOCYTOBLAST

 

Description:

Large cell with round shape.

Size:

15 - 30 µm.

Cytoplasm:

Stains basophilic (blue). The volume of the cytoplasm is small in comparison to the size of the nucleus. The cell is usually irregular in outline, moderately basophilic and non-granular. By the appearance of the cytoplasm it may be concluded which lineage stem cell will be developed from the examined hemocytoblast. If the cytoplasm is intensely basophilic, it will develop into a proerythroblast; if the cytoplasm contains rare azurophilic granules, it will become a myeloblast, and lymphoblast if the cytoplasm is pale blue.

Nucleus:

Large, occupies the major part of the cell. It stains red. The chromatin has a finely reticular pattern.

Nucleoli

1 - 2 well visible nucleoli.