title: A freeze-substitution and freeze-fracture study of bacterial spore structures.
mesh_terms: D001407:Bacillus; D001431:Bacteriological Techniques; D002462:Cell Membrane / Q000648:ultrastructure; D003460:Crystallization; D005404:Fixatives; D005614:Freeze Fracturing; D005615:Freezing; D013171:Spores, Bacterial / Q000648:ultrastructure*
chemical_list: D005404:Fixatives