Modulator, Immune Modulator, Messenger
An object or substance by which something is mediated, such as :
- A structure of the nervous system that transmits impulses eliciting a specific response.
- A chemical substance (transmitter substance) that induces activity in an excitable tissue, such as nerve or
muscle (e.g. ).
- A substance released from cells as the result of an antigen-antibody interaction or by the action of antigen
with a sensitized lymphocyte (e.g. ).
Concerning mediators of , the most
important include ,
(e.g. ), , and
There also exist three classes of lipid mediators whcih are synthesized by activated mast cells through
reactions initiated by the actions of . These are