Trains consists mainly of various steel alloys, although sometimes aluminium gets used for body panels. Then there's copper and possibly aluminium for whatever wiring the trai â¦ n has. Brass for the occasional bushing/bearing.
We also investigated how the cellular effects of BT were modified by hydrogen peroxide (H202) scavenger catalase, hypochlorous acid (HOCl) scavenger methionine, and 4-aminobenzoic acid hydrazide (ABAH), a myeloperoxidase (MPO)-specific inhibitor.
Quick Answer. According to MedicineNet, NPO is a medical abbreviation that means nil per os, or nothing by mouth. It means that a patient isn't allowed any food or drink for medical reasons, as stated by Wikipedia. Continue Reading.