Factors S--a substance which excites crustacean muscle.
D000818:Animals; D003445:Crustacea; D006801:Humans; D009132:Muscles / Q000502:physiology*; D014805:Vitamin B 12 / Q000031:analogs & derivatives
C413332:factor A; D014805:Vitamin B 12
CRUSTACEA/extracts; MUSCLES/physiology