Abstract
Nematode larvae are the common helminth parasite in vertebrates. They also affect reptiles. The present study deals with the
collection of nematode larvae from the intestine of snake Vipera russelli and histopathological observations on the infected intestine
by nematode parasites. This infection badly affects the structural morphology of the intestinal wall specially the villi. Necrosis,
atrophy and degeneration of the villi totally destroy the internal surface microanatomy of the intestine. Further observation from the
same material has revealed extrusion of the exudates on to the surface of the bowl. Hemorrhage, inflammation, adenoma, ulceration,
atrophy, necrosis, degeneration and erosion of the surface layers was seen in several sections. Numerous large, pink stained
inflammatory cells were scattered in the affected areas.