Premium
Light and Electron Microscopic Observations on Encystment of Acanthamoeba palestinensis , Reich
Author(s) -
LASMAN M.
Publication year - 1977
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1977.tb00972.x
Subject(s) - ultrastructure , exocyst , nucleolus , vesicle , cytoplasm , acanthamoeba , nucleus , biology , cyst , bulb , electron microscope , membrane , biophysics , anatomy , microbiology and biotechnology , physics , botany , optics , pathology , medicine , genetics
SYNOPSIS. The ultrastructural changes occurring during encystment of Acanthamoeba palestinensis have been investigated. The cyst wall consists of endocyst and exocyst, both having the same fine structure. At irregular intervals in the cyst wall ostioles occupied by opercula are present. The nuclear membrane forms bulb‐shaped projections and releases vesicles bounded by double membranes into the cytoplasm. Dense nucleolus‐like bodies of different sizes and variable numbers are found in the nucleus of every cyst. The importance of the cyst structure as a taxonomic criterion is discussed.