Many times (at least several times a week) I would feel a lot of air in my stomach - mostly after eating or drinking soda or whatever. It was okay for a while, but I didn't think it was normal for me to produce that much gas in my stomach and for me to be unable to burp.
In molecular genetics, a repressor is a DNA-or RNA-binding protein that inhibits the expression of one or more genes by binding to the operator or associated silencers.
Definition of effector. 1  1 : a bodily organ (as a gland or muscle) that becomes active in response to stimulation. 2  2 : a molecule (as an inducer or a corepressor) that activates, controls, or inactivates a process or action (as protein synthesis)