A subset of a (biochemical) pathway / An alternative route in part of a (biochemical) pathway

(transitive, intransitive) To plunge suddenly into water; to duck; to immerse. / (intransitive) To fall suddenly into water. / (transitive) To put out; to extinguish.

plural of Speechley

(pharmacology) A drug that selectively blocks D₂, D₃, D₄, and D₅ dopamine receptors in the brain.