Figures 32: Transmission electron micrographs from C. sepsoides tongue show goblet cells that are situated in the floor of deep trenches between the lingual papillae. Figure 32 shows vertical section of some goblet cells rested on a basement membrane (B). Their cytoplasm shows basal nuclei (N), few mitochondria (Mt), rough endoplasmic reticulum (RER) and numerous secretory granules (Sg). Note that the lamina propria contains active fibrocytes (Fi) and a longitudinal thick bundle of collagen fibre (Co). X 7450. Figure 33 shows some goblet cells (Gc) cut in oblique plan. Note the secretory granules (Sg) are fused at the cell surfaces to form mucoid secretions (Mu). N: Nucleus, RER: Rough endoplasmic reticulum. ×6000.