Emulsion Definition. An emulsion is a colloid of two or more immiscible liquids where one liquid contains a dispersion of the other liquids. In other words, an emulsion is a special type of mixture made by combining two liquids that normally don't mix. The word emulsion comes from the Latin word meaning to milk (milk is one example of an emulsion of fat and water). The process of turning a liquid mixture into an emulsion is called emulsification.
During the drug testing process, the medicine in Saxenda Â® caused rats and mice to develop tumors of the thyroid gland. Some of these tumors were cancers. It is not known if Saxenda Â® will cause thyroid tumors or a type of thyroid cancer called medullary thyroid cancer in people.
From formulating new cancer drugs to testing dietary supplements, mice and rats play a critical role in developing new medical wonders. In fact, 95 percent of all lab animals are mice and rats, according to the Foundation for Biomedical Research (FBR). Scientists and researchers rely on mice and rats for several reasons. One is convenience: rodents are small, easily housed and maintained, and adapt well to new surroundings.