The chickenpox vaccine is a shot that can protect nearly anyone who receives the vaccine from catching chickenpox. It's also called the varicella vaccine, because chickenpox is caused by the varicella-zoster virus. The vaccine is made from a live but weakened, or attenuated, virus. Viruses that have been attenuated are less virulent than viruses that are not.
The term whole grain refers to a variety of grains, including wheat, corn, rice, oats and rye, which are still in their natural form. Whole grains have a bran, germ and endosperm. To be considered a whole grain, the entire grain must still be intact and not just the endosperm, as is the case in refined grains.
Oats are most commonly rolled or crushed, and can be consumed as oatmeal (porridge), in baked goods, bread, muesli and granola. This is what rolled oats look like: Whole grain oats are called oat groats. The oat groats are most commonly rolled or crushed into flat flakes and lightly toasted to produce oatmeal. Quick, or instant oatmeal is made up of more thinly rolled or cut oats that absorb water much more easily and therefore cook faster. The oat bran (the fiber-rich outer layer of the grain) is often consumed separately as a cereal, with muesli or in breads.