Electron-microscopic structure of protozoa . electronmicrosco00pite Year: 1963 CILIATES 179 pattern was first explained by Ehret and Powers (1959) (Text-fig. 14). The present interpretation, differing only very slightly from theirs, arises from a comparison of the published data on Para- mecium with the later tetrahymenid studies. Cilia in Paramecium arise from a boat-shaped circumciliary depression in each Text-figure 14. Diagrammatic reconstruction of the cortex of Paramecium. Each pair of cilia emerges from the center of a polygon; the pairs of inflated alveoli defining the polygons are
Electron-microscopic structure of protozoa . electronmicrosco00pite Year: 1963 CILIATES 179 pattern was first explained by Ehret and Powers (1959) (Text-fig. 14). The present interpretation, differing only very slightly from theirs, arises from a comparison of the published data on Para- mecium with the later tetrahymenid studies. Cilia in Paramecium arise from a boat-shaped circumciliary depression in each Text-figure 14. Diagrammatic reconstruction of the cortex of Paramecium. Each pair of cilia emerges from the center of a polygon; the pairs of inflated alveoli defining the polygons are shown in section at the right edge of the stereogram. Parasomal sacs are shown adjacent to the cilia in these polygons. Resting trichocysts alternate with the polygons in longitudinal rows. Kinetodesmal fibers form loose cables paralleling each kinety. From Corliss 1961; redrawn from Ehret and Powers 1959. polygon. Trichocysts emerge from the horizontal junctions be- tween polygons in a longitudinal row. As in the tetrahymenids, the Paramecium pellicle consists of a continuous outer membrane overlying a mosaic of alveoli, but the latter, according to all accounts, are normally somewhat inflated. Furthermore, the alveoli are neatly dissected into units corresponding with ciliary
Size: 1516px × 1319px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
