Broad swellings (0.5 m) on the dorsal surface of a moving epidermal cell in culture, that move rearward as the cell moves forward (as do ruffles on fibroblasts). ... (18 Nov 1997) ... 
Broad swellings (0.5 m m) on the dorsal surface of a moving epidermal cell in culture, that move rearward as the cell moves forward (as do ruffles on fibroblasts).