In this article we will discuss about the structure and life history of flagellate or Giardia intestinalis (explained with diagram). Structure of Flagellate: Flagellate occurs in two different forms: 1. Trophozoite or feeding stage and 2. Cystic stage. 1. Trophozoite or Feeding stage: It possesses a bilateral symmetrical body with organelles occurring in pairs and measures 10-18 μm length. The [...]
Comparative account of four species of human infecting malarial parasite: 1. P. Vivax: i. Geographical distribution: In tropical, subtropical and warmer temperate regions. ii. Duration of pre-erythrocytic schizogony: 10-14 days iii. No. of crypto- zoites formed per schizont: 10,000-12,000 (approx.) iv. Incubation period: 14 days v. Duration of erythrocytic schizogony: 2 days vi. Form in peripheral blood during erythrocytic schizogony: [...]
In this article we will discuss about the life cycle of trypanosoma gambiense. Trypanosoma gambiense is digenetic; i.e., it completes its life cycle in two hosts. The primary or definitive host is man. The mammals, like pigs, buffaloes, antelopes often act as reservoir hosts harbouring the parasite. The intermediate host is blood sucking insect called tsetse fly (Glossina palpalis). Life [...]