Figure 4From: Formation and characterization of non-growth states in Clostridium thermocellum: spores and L-formsHeat Stress Tolerance. The ability of each cell type to tolerate heat stress was tested by exposing all cell types to100°C for 0–30 minutes. Results reported are a measure of viable counts after heat treatment. The lower limit of detection was 10 CFU ml-1. Error bars represent one standard deviation, n = 3.Back to article page