Fig. 4. Temperature dependence of GP value. P. aurelia syngens, 2, 3, 8 and 10 cells were cultured at 25°C. Fluorescence image of laurdan-labeled cells was initially taken at 25°C, and then taken 3 min after the temperature shift to either 35°C or the killing temperature of each syngen. Images were taken before the cell death. GP values are the means ± s.d. (N=5-8 cells).