What do you do when your chemistry applies not only to the hottest field of cancer treatment, but to other areas as well? The answer, according to Seattle biotech Nexgenia, involves broadening your outlook. So far the company, which manufactures compounds that isolate or remove substances from samples, has been focused on immunotherapy, in which scientists use a patient's own immune system to fight cancer. It's a promising area of treatment that's a focus for many Seattle-area companies. Now...