Fig. 5. a in Morphological and molecular description of Pallisentis roparensis n. sp. (Acanthocephala: Quadrigyridae) infecting the freshwater cat fish Wallago attu from Ropar Wetland, Punjab, India

Fig. 5. a-histological section of small intestine of uninfected fish (Wallago attu) showing intestinal villi with a continuous epithelium; b-ruptured intestinal villi of the infected fish host; c-unusual branching of villi and dilated lymphatic vessels in mucosa of infected small intestine; d-abrasion and desquamation of the mucosal epithelium in infected fish; e– hyperplasia of the intestinal villi at the site of parasite attachment; f-magnified view of the infiltrated immune cells in the sub mucosal layer of the infected intestine (M-mucosa, SM-submucosa, ML-muscularis, DL-dilated lymphatic vessels, UBunusual branching, DSE-desquamated intestinal epithelium, HP- hyperplasia, MP- macrophage).