Page 175 - Atlas of Histology with Functional Correlations

FIGURE 5.3 ■ Cells of the connective tissue. Stain: hematoxylin and eosin.
High magnification or oil immersion.

FIGURE 5.4 | Connective Tissue, Capillary, and

Mast Cell in Mesentery of Small Intestine

This micrograph illustrates the connective tissue from the mesentery of a small
intestine. Closely associated with the capillary (3) and sectioned in a

longitudinal plane is a mast cell with dense granules (5) in its cytoplasm and a
red-staining nucleus. The capillary (3) is packed with red blood cells (6).
Because the lumen of the capillary is about the size of a red blood cell (RBC),
the RBCs in its lumen are lined up in a row. Located above the capillary (3) is a
larger vessel, a venule (2), sectioned in a transverse plane and also packed with

RBCs. Surrounding the blood vessels (2, 3) are numerous adipose cells (1) with
their lipid contents washed out during slide preparation. Also present are the
dense layers of blue-staining collagen fibers (4) and fibrocytes (7) that are

closely associated with the blood vessels and the capillaries.

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