MRI vs. MRA. An MRA, or magnetic resonance angiogram, is a type of MRI scan that uses MRI's magnetic fields and radio waves to produce pictures of blood vessels inside the body, allowing doctors to locate problems that may cause reduced blood flow.
Best Answer: Ethyl alcohol, at the concentrations used in most antibacterial preparations, kills bacteria by disrupting membranes and by denaturing proteins. Ethylalcohol is miscible in water (that is, completely soluble). But ethyl alcohol can also dissolve in the membranes of cells.
Isopropyl alcohol is a sedative-hypnotic agent whose toxicity closely resembles that of ethanol, with which it shares strong structural similarity. Like ethanol, isopropyl alcohol's precise mechanism of action in the central nervous system (CNS) remains uncertain.