Fig. 13. Three Pavlova strains, details of the PY. A–E. TEM images. A. AC250, whole cell with a longitudinally sectioned C showing the E composed of osmiophilic clustered globules on its inner side and on the opposite side, the transversely sectioned campylotropous PY forming a slight hump on the cell surface and showing the narrow median space. (Fix 1). B. AC248, protruding campylotropous PY, longitudinally sectioned, completely surrounded by the C-membrane, bordered by periplastic ER on the cell surface and showing a narrow medial stromal space. (Fix 1). C. AC250, campylotropous PY, longitudinally sectioned emerging from the C towards the interior of the cell. (Fix 1). D. AC33, section of a palmelloid benthic cell surrounded by M with a cross sectioned campylotropous PY, in the middle of single cup-shaped parietal C, forming an ovoid bulge at the cell surface. (Original image, courtesy of C. Billard). E. AC248, detail of a cross section of the campylotropous pyrenoid attached to the plasma membrane (white arrows) showing the surrounding chloroplastic envelope lined on the inside by the periplastic ER (black arrows). (Fix 1). F. SEM image of AC248, postero-lateral view of a swimming cell with a complete F apparatus. PY bulging opposite the flagella with a tongue-like part projecting outwards from the cell. Scale bars: A = 1 µm; B = 20 nm; C = 0.5 µm; E = 200 nm; F = 2 µm.