Thanks to animal research, many diseases that once killed millions of people every year are either treatable or have been eradicated altogether. Immunizations against polio, diphtheria, mumps, rubella and hepatitis save countless lives, and the survival rates from many major diseases are at an all-time high, thanks to the discovery of new drugs, medical devices and surgical procedures. According to the American Cancer Society, the fight against cancer has seen 24 significant biomedical advances in the past 30 years.