“…Spores of all the B. cereus group species possess an outermost layer, called the exosporium, which is not present on other species, including B. clausii, B. safensis and B. subtilis, among others (Driks, 2002;Traag et al, 2010). The exosporium is comprised of a paracrystalline basal layer which is covered by a hair-like nap layer (Gerhardt and Ribi, 1964;Hachisuka et al, 1966;Gerhardt, 1967;Beaman et al, 1971;Sylvestre et al, 2002;Lai et al, 2003;Steichen et al, 2003;Todd et al, 2003;Giorno et al, 2007;). The exosporium, as the outermost layer of the spores of these species, likely plays important roles in interactions with surfaces in the soil.…”