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Fig. 10. Ultrastructure of the filament epithelium in carp 6 h (A–C) and 12 h
(D–F) following recovery from hypoxia as viewed by scanning electron
microscopy (SEM; A,D), and transmission electron microscopy (TEM; B,C,E,F). In
A, which shows the epithelial surface, note the mucous cells (MCs),
`shallow-basin' mitochondria-rich cell (MRCs; black-headed arrows) and
`wavy-convex' MRCs with short microvilli (white-headed arrows). In B, note the
shallow-basin MRC with branched microvilli protruding from the apical cavity.
In C, note the wavy-convex MRC with short, wide, and slightly branched
microvilli. In D, which shows the epithelial surface, note the abundant
wavy-convex MRCs with branched microvilli (white arrows; McV) and MRCs with
short microvilli (white-headed arrows). E and F show the apical area of
wavy-convex MRCs with short and strait (E) and branched longer microvilli (F).
PVC, pavement cell. Scale bars, (A,D) 10 µm; (B) 2 µm; (C,E,F) 1
µm.
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