FIG. 2.
Variation in the level of Ca-DPA in spores of B. subtilis. Levels of Ca-DPA in 200 individual B. subtilis PS832 (wild-type) spores (a and b) and in a single spore measured 200 times (c and d) were determined as described in Materials and Methods. The solid lines in panels b and d are the Guassian fits of the histogram distributions.