. Electron-microscopic structure of protozoa. Protozoa; Electron microscopy. CILIATES 173 membranes, the outer one being continuous and providing the limiting membranes of the cilia, and the middle and inner layers joining to form the discontinuous but closely fitted alveoli (Figs. 70 and 71, PL XIX).. Text-figure 12. Schematic drawings of sections through a cilium and surrounding structures in Colpidium. Top: transverse section showing continuous outer membrane and alveoli of silverline system. Mucigenic body in secondary meridian at left; secondary meridian at right enlarged above. To right
. Electron-microscopic structure of protozoa. Protozoa; Electron microscopy. CILIATES 173 membranes, the outer one being continuous and providing the limiting membranes of the cilia, and the middle and inner layers joining to form the discontinuous but closely fitted alveoli (Figs. 70 and 71, PL XIX).. Text-figure 12. Schematic drawings of sections through a cilium and surrounding structures in Colpidium. Top: transverse section showing continuous outer membrane and alveoli of silverline system. Mucigenic body in secondary meridian at left; secondary meridian at right enlarged above. To right of kineto- some are three sections of kinetodesmal fibrils and row of fibrils composing longitudinal band. To left of cilium are oblique sections of two fibrils of transverse band. Lower left: longitudinal section in an idealized plane just barely to right of primary meridian. Postciliary fibrils posterior to kinetosome; kinetodesmal fibril anterior to kinetosome. Lower right: cross-sections through cilium base at successively deeper levels as indicated by lines, a, b, and c on other diagrams. Transverse fibrils to left of (below) cilia in sections a and b. Parasomal sac and fused pellicular ring in section b. Kinetodesmal and postciliary fibril attachments to kinetosome shown in section c. From Pitelka, 1961a. This new picture represents a considerable departure from some, at least, of the classical views of the silverline system inas- much as it is seen to be an arrangement of membranes and not of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Pitelka, Dorothy R. (Dorothy Riggs), 1920-. Oxford, New York, Pergamon Press; [distributed in the Western Hemisphere by Macmillan, New York]
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