bradykinin

noun
bra·​dy·​ki·​nin | \ˌbrā-di-ˈkī-nən \

Definition of bradykinin 

: a kinin that is formed locally in injured tissue, acts in vasodilation of small arterioles, is considered to play a part in inflammatory processes, and is composed of a chain of nine amino acid residues

First Known Use of bradykinin

1949, in the meaning defined above

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The first known use of bradykinin was in 1949

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bradykinin

noun
bra·​dy·​ki·​nin | \-ˈkī-nən \

Medical Definition of bradykinin 

: a kinin that is formed locally in injured tissue, acts in vasodilation of small arterioles, is considered to play a part in inflammatory processes, and is composed of a chain of nine amino acid residues — see kallidin

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Britannica.com: Encyclopedia article about bradykinin

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