The upcoming discussion will update you about the difference between A. Duodenale and N. Americanus. Difference # A. Duodenale: (a) Adult worms: 1. Size: Adults worms are large in size and are coarser. 2. Anterior end: Bends in the same direction as the body curvature. 3. Buccal capsule: It is armed with a pair of chitinous ventro-lateral cutting plates bearing [...]
Sporocyst Larva: It looks like an elongated sac, about 0.7 mm long. Its body-wall retains all the layers of body wall of Miracidium except the ciliated ectoderm. During metamorphosis into Sporocyst, the outer coat of ciliated cells is thrown off, the pigment cells of the eye-spot separate from one another and loose their crescentic form and the organism becomes a [...]
Transmission of E. histolytica from man to man occurs through its encysted stage and infection is effected through the ingestion of these cysts in food or drinks. It is to be noted that mature quadrinucleate cysts are the infective forms of this parasite. The contamination of food and drinks is occurred by: i. Faecal contamination of drinking water, vegetables and [...]