Fig. 1. Transmission electron micrograph images of C. sporogenes spores. (a) Transmission electron micrograph of a cross section of a C. sporogenes spore with the cortex intact. (CT)
cortex; (SC) spore coat; (C) spore core; (EX) exosporium. (b), (c) and (d) TEM of germinating C. sporogenes spores (L-alanine (100 mM)/L-lactate (50 mM)/NaHCO3 (50 mM), 20 mM
Tris buffer, pH 7.4) showing expansion of the spore cortex and spore core. Red arrow indicates breaks and distortion of the spore coat. Green arrow indicates open section in the
exosporium which may allow the release of the newly formed cell.