Intestinal villi stained with the Periodic Acid Schiff (PAS) staining technique. This method highlights the goblet cells of the intestinal epithelium.

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Keywords: biology, cell, digestive, eosin, epithelial, epithelium, gastrointestinal, gi, goblet, gut, hematoxylin, histology, intestine, light, microscope, microscopy, mucosa, small, system, tissue, tract, villi, villus