RESIDENT CELLS OF THE CONNECTIVE TISSUE
FIBROBLAST-3
FIBROBLAST-3
A fibroblast with an elliptical nucleus is shown. Observe the staining of its cytoplasm – it is bluish, basophilic. This means that it holds many ribosomes and a large amount of RNA and is probably actively synthesizing macromolecules.
Two other cells can be observed. One of them, with a round, well stained nucleus, is possibly a mast cell. It is a resident cell of the connective tissue, not usually stained by hematoxylin/eosin.
The other cell is a lymphocyte. A small transient cell (aproximately the size of red blood cells) recognized by its round nucleus surrounded by a scarce bluish cytoplasm that is often not visible in histological sections and for this reason the lymphocytes are recognized by their nuclei.
The remainder of the image is occupied mostly by collagen fibers.
Two other cells can be observed. One of them, with a round, well stained nucleus, is possibly a mast cell. It is a resident cell of the connective tissue, not usually stained by hematoxylin/eosin.
The other cell is a lymphocyte. A small transient cell (aproximately the size of red blood cells) recognized by its round nucleus surrounded by a scarce bluish cytoplasm that is often not visible in histological sections and for this reason the lymphocytes are recognized by their nuclei.
The remainder of the image is occupied mostly by collagen fibers.
Connective tissue proper. Staining: HE. High magnification.
