title: Ultrastructural examination of the squid giant axons perfused intracellularly with protease.
mesh_terms: D000818:Animals; D001369:Axons / Q000187:drug effects*; D001412:Bacillus subtilis; D004558:Electric Stimulation; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D008974:Mollusca; D009431:Neural Conduction / Q000187:drug effects*; D010447:Peptide Hydrolases / Q000494:pharmacology*; D010477:Perfusion
chemical_list: D010447:Peptide Hydrolases