Fig. 3. Typical examples of laurdan-labeled P. aurelia and GP image. (A) Fluorescence image of laurdan-labeled P. aurelia. Syngen 10 cells were labeled with laurdan and observed at 25°C. The photograph was taken with a 4 s exposure using a digital camera. Scale bar, 50 µm. (B) GP map image calculated from fluorescence images of syngen 2 cell at 25°C. The GP value of each pixel was measured within the circle (diameter, 20 µm). (C) Colour bar and histogram of GP values obtained from (B). Total counts: 8730, bin width: 0.006. GP value was determined from the mean of the histogram.