chemical messenger
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Chemical messenger — A chemical messenger is any compound that serves to transmit a message. A chemical messenger may refer to: Hormone, Long range chemical messenger Neurotransmitter, communicates to adjacent cells Neuropeptide, a protein sequence which acts as a… … Wikipedia
Messenger — Courier, or messenger, is a person or thing that carries a message. Messenger or Messengers may also refer to: Contents 1 Biology and chemistry 2 Films and television … Wikipedia
Messenger RNA — The life cycle of an mRNA in a eukaryotic cell. RNA is transcribed in the nucleus; processed, it is transported to the cytoplasm and translated by the ribosome. At the end of its life, the mRNA is degraded. Messenger RNA (mRNA) is a molecule of… … Wikipedia
MESSENGER — This article is about the NASA space mission. For other uses, see Messenger. MESSENGER Artist s rendering of MESSENGER orbiting Mercury. Operator NASA / APL Major contractors APL … Wikipedia
second messenger — n an intracellular substance (as cyclic AMP) that mediates cell activity by relaying a signal from an extracellular molecule (as of a hormone or neurotransmitter) bound to the cell s surface compare FIRST MESSENGER * * * an organic molecule that… … Medical dictionary
secondary messenger — A chemical compound within a cell that is responsible for initiating the response to a signal from a chemical messenger (such as a hormone) that cannot enter the target cell itself … Glossary of Biotechnology
second messenger — an organic molecule that acts within a cell to initiate the response to a signal carried by a chemical messenger (e.g. a hormone) that does not itself enter the cell. Examples of second messengers are inositol triphosphate and cyclic AMP … The new mediacal dictionary
second messenger — Biochem. any of various intracellular chemical substances, as cyclic AMP, that transmit and amplify the messages delivered by a first messenger to specific receptors on the cell surface. Cf. first messenger. [1960 65] * * * ▪ biology molecule… … Universalium
List of chemical element name etymologies — This is the list of etymologies for all chemical element names: Name Symbol Language of origin Word of origin Meaning Symbol origin Description Actinium Ac Greek ἀκτίς (aktis) beam Greek aktinos ἀκτίς, ἀκτῖνος (aktis; aktinos), meaning beam (ray) … Wikipedia
drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… … Universalium
