acupressure: A Chinese method of treating illness by massaging certain points on the body (the same points used in acupuncture).

adenovirus: A type of virus that causes colds; in modified form, it may be used in the future to treat some kinds of cancer.

alternative treatments or therapies: Treatments for illness that are different from the ones used by most doctors.

angiogenesis: The process by which a cancerous tumor causes new blood vessels to grow inside itself to provide it with nutrients.

angiostatin: An experimental anticancer drug that prevents blood vessel growth in tumors.

antibody: A substance made by certain immune system cells that attaches to a particular antigen and marks the bearer of the antigen for destruction by the immune system.

antigen: A substance on the surface of a cell, virus, or other substance that acts as a marker for the immune system.

base: One of four...