Like the M 1 and M 3 muscarinic receptor, M 5 receptors are coupled with G proteins of class Gq that upregulate phospholipase C and, therefore, inositol trisphosphate and intracellular calcium as a signaling pathway.
Radioactive iodine is a very effective type of treatment for cancer of the thyroid gland. Thyroid cells absorb iodine. The radioactive iodine from the drink or capsule is absorbed into your body and picked up by the thyroid cancer cells wherever they are. So it can kill the cancer cells even if they have spread.
Best Answer: Iodine is a halogen like chlorine, bromine, fluorine. These chemicals are very active in germ killing, but iodine is not as aggressive as the others and is more gentle. It is also a necessary nutrient for the body that most of us are deficient in due to all the fluoride being put in drinking water, in all sodas, fluoride toothpaste, etc.