English: Slice of submandibular gland. H&E staining, the structure of the red stained cytoplasm on the left is the serous demilunes. The cytoplasm of the serous cells on the left side of the visible image is darker and the nucleus is round; The remaining cells with light cytoplasmic staining are mainly mucous cells, with a flat and round nucleus located at the cellular level. (40 * 10, image cropped and moderately enlarged)
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