What's the difference between i.e. and e.g.?
inducer in·duc·er (ĭn-dōō'sər, -dyōō'-)
One that induces, especially a molecule that is usually a substrate of a specific enzyme pathway, combining with an active repressor produced by a regulator gene to deactivate the repressor.
A part or structure in an embryo that influences the differentiation of another part.