An amastigote is a cell which does not have any flagella or cilia.
Amastigote and Promastigote
An amastigote is a morphological form of certain protozoan parasites, notably within the genus Leishmania and Trypanosoma. In this stage, the organism is non-flagellated and usually found within host cells, particularly macrophages. Amastigotes are crucial for the lifecycle of these parasites, as they replicate intracellularly, leading to disease in the host.
The parasite exists (kalazar) in two forms:- 1. Leishmanial form or amastigote form can be found in R/E all of human. 2. Leptomonia form or prosmastigote form is found in same or in artificial culture media.