ABSTRACT
Fig. 6.16 TEM features of specialized mucous glands in male Rana dalmatina. A. The wide interstices between contiguous mucocytes contain intertwined plasmalemma projections. B. The perinuclear cytoplasm accommodates the protein synthetic machinery, consisting of slender rer profiles and Golgi stacks. C. Granules of varying electron-density fill the supranuclear cytoplasm. D. Lipid-like droplets are common structures in the basal portions of these glands. E. The mucous, secretory granules tend to aggregate at the luminal border, where they maintain remarkable electronopacity. However, the final dilution processes render the secretory product transparent, as it is obvious in the center of the lumen. F. Basal interstices between mucocytes
Contd.
