mechanism of tetanus disease, 3d

3d toxin biochemical spasm tonic bacteriology microbiological tetanus seizure neurotoxin rusty nail neurotropic exotoxin clostridium tetani lockjaw extrapyramidal spasmogenic opisthotonus tetanospasmin extreme arched pose spasticity spinal cord wound molecular model biological compound isolated man illustration medical biology infected structure clinical toxic disease chemical medicine metal substance protein microbiology chemistry biochemistry hyperextension molecule symptom