title: Freeze-etch studies on the bacterial cell surfaces: action of the cell wall lytic enzymes on the gram-positive cocci.
mesh_terms: D002473:Cell Wall / Q000187:drug effects / Q000648:ultrastructure; D005613:Freeze Etching; D008837:Micrococcus / Q000648:ultrastructure*; D009113:Muramidase / Q000494:pharmacology*; D013210:Staphylococcus / Q000648:ultrastructure*
chemical_list: D009113:Muramidase