Your doctor will put a video camera or tiny robot into your chest. Itâll guide the creation of scar tissue that may help keep your heartbeat at the right pace. A more invasive maze procedure is done during open heart surgery. People usually have surgical ablation if they are already having valve or bypass surgery for heart disease.
Rhodium is a silver-white hard metal often found in platinum ores. It is the most expensive precious metal. In its natural solid state Rhodium is far too hard to work, but it is used as an alloy in the smelting of platinum and palladium.
Rhodopsin. (also visual purple), the main visual pigment contained in the retinal rods of vertebrates (with the exception of certain fishes and amphibians during their early stages of development) and invertebrates.igure 1. Cycle of the principal changes undergone by rhodopsin in retinal rods. It has been found that the cell membranes of certain halophilic bacteria contain a pigment that is also composed of retinal, a glycoprotein, and lipids.