Opal, an immunochemist with a mind that delves into the intricate workings of the human immune system, investigates the body's remarkable defenses against disease. She conducts groundbreaking research, developing new vaccines and therapies that combat infectious diseases and strengthen the body's natural defenses. It is said that when Opal successfully isolates a new antibody, a faint, iridescent glow emanates from the sample, a testament to the brilliance of the human immune system and the power of scientific discovery.