Fig. 2
Electron micrographs of the striated duct showing (a) control group; characteristic infolded basal membrane containing abundant mitochondria (white arrows), central nucleus (N) with prominent nucleolus (n), b, c khat- treated group of the submandibular and the sublingual salivary glands respectively; nuclei with variable sizes (N) and basal folding contained degenerated mitochondria (blue arrows) (Uranyl acetate & lead citrate X 1000), d–f higher magnification of the squared dotted area (Uranyl acetate & lead citrate X 2000) (Scale bar: 10 µm)