Photographs and corresponding fluorescence intensity graphs for individual fat stromal cells before, during, and after PGE
signaling. Each stromal cell was circled on the screen using a different color to measure their intensity level and the PGE2-induced signaling was recorded using the corresponding matching colors. The graphs directly below the photographs represent the cell signaling before, during, and after the addition of PGE2 (0.12 μM). The graph on the bottom is the complete signaling pattern for all cells.