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Figure 2: P. euphratica suspended cells viability after heat shock for 20 min at 25°C (♦), 40°C (□), 45°C (), 50°C (■), and 55°C (○) and subsequent recovery at 25°C, for up to 80 h. Cell viability was determined by the trypan blue exclusion method. Results represented mean values of twenty independent cell counts (>50 cells per count).