Regularly Arranged Particles on the Inner Lamella of the Plasma Membrane of Acanthamoeba Palestinensis

Recently, it was suggested that portions of the plasma membrane of Acanthamoeba palestinensis are composed of curved pieces of membrane or plaques, which may be derived from and/or give rise to cuplike cytoplasmic vesicles (1) . This paper, previously reported in abstract form (2), further delineates the mosaic nature of the plasma membrane of this cell by describing the existence of regions of the plasmalemma where regularly arranged particles are attached to the cytoplasmic surface .