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.
The term oatmeal sometimes refers to porridge made from the bran or fibrous husk as well as the oat kernel or groat. Rolled oats are often used as a key ingredient in granola breakfast cereals (in which toasted oats are blended with sugar and/or nuts and raisins) and granola bars.