Figure 1619

Photomicrograph of an intestinal villus. The surface of the villus consists of columnar epithelial cells, chiefly enterocytes with a striated border. Also evident are goblet cells that can be readily identified by the presence of the apical mucous cup. Located beneath the epithelium is the highly cellular loose connective tissue, the lamina propria. The lamina propria contains large numbers of round cells, mostly lymphocytes. In addition, smooth muscle cells can be identified. A lymphatic capillary called a lacteal occupies the center of the villus. When the lacteal is dilated, as it is in this specimen, it is easily identified. X160.

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