Licence: Public Domain Mark
Credit: Elements of histology / by E. Klein. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![are more or less ]iolygonal, or slightly elongated. Their outlines vary; in the lining of the lymph sacs of the frog they are much larger, and of very sinuous out- line ; while those of the posterior surface of the cornea Pig. 19.—Omentum of Rabbit, stained with Nitrate of Silver, a, Ordinary flat endothelial cells; \>, germinating cells. (Atlas.) are very regular, pentagonal, or hexagonal, having straight outlines in the perfectly normal and well-pre- served condition, but serrated and sinuous after they have been prepared with various reagents and in the abnormal state; the endothelial plates lining the blood- vessels and lymphatic vessels (Fig. 18) are narrow and elongated, with more or less sinuous outlines. In the lymphatic capillaries the endothelial plates are poly- gonal, but their outline serrated. 32. As a rule the endothelial cells are flattened,](https://iiif.wellcomecollection.org/image/b21725330_0043.jp2/full/800%2C/0/default.jpg)