Figure 3.

Morphological analysis of control and stretched umbrella cells. Cells were mounted in chambers and incubated for 5 h without stretch (A and B), or stretched for 20 min (C and D) or 5 h (E and F), fixed, and processed for TEM. (A, C, and E) Low-magnification views of representative umbrella cells from each experimental condition. The arrows delineate the borders of the cells. (B, D, and F) Higher magnification views of the apical portion of each umbrella cell. Representative discoidal vesicles are marked by arrowheads.