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 [...]
Parasitic protozoa are classified mainly into four groups. They are: (a) Rhizopoda (Plasmodroma): The organisms of this group move by producing pseudopodia. They multiply by binary fission and form cysts, as in E. histolytica. (b) Mastigophora: The organisms move by means of flagella, binary fission takes place by longitudinal division e.g., Trypanosoma, Leptomonad etc. (c) Sporozoa: They move by amoeboid [...]
Difference between Entamoeba histolytica and Entamoeba coli: Difference # E. histolytica: A. Trophozoite stage: (i) Fairly abundant in amoebic dysentery stools. (ii) The size varies from 10-30µ (iii) The outline shows finger like pseudopodia. (iv) Actively motile in nature. (v) Cytoplasm: Ectoplasm—prominent; Endoplasm—finely granular with ingested RBCs Vacuoles—scanty, spherical and defined. Nucleus: Nuclear membrane uniformly stained with chromatin; karyosome is [...]