Fig. 2 in Histological And Ultrastructural Studies On The Intestine Of Guntea Loach, Lepidocephalichthys Guntea (Cypriniformes, Cobitidae)

Fig. 2. Photomicrographs of posterior intestine of L. guntea by scanning electron microscopy (SEM) as well as transmission electron microscopy (TEM) and transverse sections stained with Delafield's Haematoxylin- Eosin (HE) and Toluidine blue (TB) stain: a — histological section of posterior intestine shows mucosa (M) with columnar epithelial cells (CEC), submucosa (SM), muscularis (ML) and serosa (S). Note predominantly presence of blood vessels (solid arrows) in M and SM (HE) ×400; b — semithin sections of intestine illustrates flat mucosa (M) with CEC and blood vessels (solid arrows). Note the presence of inner circular muscle layer (CL), outer longitudinal muscle layer (LL) and highly vascular submucosa (SM). VL mark vesicles (TB) ×1000; c — long irregular mucosal folds (MF) exhibits minute blood capillaries (arrows) and columnar epithelial cells (CEC) (SEM) ×200; d — mucosa is lined with columnar epithelial cells having numerous microvilli (MV), basally located nucleus (N) encircled by rough endoplasmic reticulum (arrow heads), polymorphic mitochondria (MT), lysosome (solid arrow) and Golgi apparatus (G). Note the presence of blood vessel (broken arrow) packed with erythrocyte (E) (TEM) ×5000; e — intestinal epithelium shows mucous cells (MC) and CEC contains nucleus (N), mitochondria (arrow heads), rough endoplasmic reticulum (broken arrows) and vesicle (VL). Note the presence of blood capillaries (solid arrows) with erythrocytes (E) (TEM) ×2500; f — submucosa holds blood vessels (BV) with erythrocytes (solid arrows). Arrow heads mark the nuclei of erythrocytes (TEM) ×1550.