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first messenger

American  

noun

Biochemistry.
  1. a hormone that triggers a biochemical reaction at a site removed from its release.


Etymology

Origin of first messenger

First recorded in 1975–80

Example Sentences

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The hormone that initiates the signaling pathway is called a first messenger, which activates a second messenger in the cytoplasm, as illustrated in Figure 28.6.

From Textbooks Jun. 9, 2022

The hormone that initiated the signaling pathway is called a first messenger.

From Textbooks Jun. 9, 2022

The hormone is called a first messenger and the cellular component is called a second messenger.

From Textbooks Jun. 9, 2022

In this case, the hormone is called a first messenger.

From Textbooks Jun. 19, 2013

The first messenger appeared on the terrace and announced to the Pharaoh that Tahoser could not be found.

From The Works of Theophile Gautier, Volume 5 The Romance of a Mummy and Egypt by Frederick C. de (Frederick Caesar de) Sumichrast

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