Fig. 3.
ATP-induced signals occur uniformly across HSC. A: microscopic display of regions of interest within an individual cell. A blow-up of the central cell seen in Fig. 1 is shown. Regions of interest were drawn on 3 different areas within the cell. B: graphical representation of signals within regions of interest depicted in A. fluo-4 fluorescence increases were plotted for the entire cell and for the 3 regions of interest identified in A. Unlike in some cell types, the fluorescence increases occur uniformly across the cell.