* * *
a factor or hormone that binds to a receptor on the external surface of a cell and sets off a series of reactions that eventually convert a precursor into a second messenger.Medical dictionary. 2011.
First Messenger — First Mes|sen|ger [ fœ:st mɛsɪnʃə; engl. = erster Bote]: ↑ Bote … Universal-Lexikon
first messenger — Biochem. a hormone that triggers a biochemical reaction at a site removed from its release. Cf. second messenger. [1975 80] * * * … Universalium
first messenger — Biochem. a hormone that triggers a biochemical reaction at a site removed from its release. Cf. second messenger. [1975 80] … Useful english dictionary
messenger — 1. That which carries a message. 2. Having message carrying properties. first m. a hormone that binds to a receptor on the surface cell and, in so doing, communicates with intracellular metabolic processes. second m. an intermediary molecule that … Medical dictionary
MESSENGER — Caractéristiques Organisation … Wikipédia en Français
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