Motor Apparatus of<i>Euglena Gracilis</i>: Ultrastructure of the Basal Portion of the Flagellum and the Paraflagellar Body

Abstract

Abstract The intracytoplasmic origin of the flagella in Euglena gracilis is described with particular regard to the transitional zone. Our observations are compared with those reported for Entosiphon. The structure of the paraflagellar body has been studied by diphractometric analysis. The PFB of Euglena may be described as a crystal with a monoclinic or slightly distorted hexagonal unit cell with dimensions: a = 8.9 nm; b = 7.7 nm; c = 8.3 nm; 0 = 110°.