“Embryonic stem cells” because they are pluripotent, which means they can develop into all of the body's cell types apart from the placenta and umbilical cord. As they offer a reusable resource for researching healthy growth and disease, as well as testing medications and other treatments, these cells are highly significant. The cells are versatile and have great potential for use in regenerative medicine to cure a range of diseases that burden the human race, such as Parkinson’s disease, Alzheimer’s disease, and multiple sclerosis (MS).