单词 | signal molecule |
释义 | > as lemmassignal molecule signal molecule n. any extracellular or intracellular molecule (e.g. a hormone, neurotransmitter, second messenger, etc.), released in response to a stimulus that promotes a particular reaction in a cell, or behaviour in an organism; esp. such a molecule involved in cell-to-cell communication. ΚΠ 1966 Jrnl. Insect Physiol. 12 427 An electron-rich group (oxygen) appears to be an essential part of the signal molecule [of an alarm pheremone]. 1986 Guardian (Nexis) 25 Apr. As the hormone [sc. abscisic acid] acts as a signal molecule in plants,..it seems reasonable to expect that it also acts as a signal molecule in the brain. 2006 J. A. Feldman From Molecule to Metaphor ii. 19 The emission and subsequent recognition of a signal molecule is the simplest form of communication among living things. < as lemmas |
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