\" \" Not all germs are destructive and some scientists see the need to bank them for possible future use. Some doctors also say that kids should be exposed to certain germs at a certain age to help build immunity. AdvertisementA Rutgers University–New Brunswick-led team of researchers is even calling for a \"germ bank,\" where microbes can be stored out of harm's way and possibly used to ward off disease in the future. Microbes are already being used to treat a wide range of maladies, from rare genetic conditions to cancer. But as human resistance to certain drugs builds over time, germ bank supporters say a \"Noah's Ark\" of bacteria and other potentially life-saving material will help ensure that new medicines can be developed before it's too late.