The body's organ systems include your circulatory and respiratory systems, your brain and nervous system, and the organs of your gastrointestinal tract. Each group of organs has a different complex ...

The development and eventual approval of modern drugs is hugely reliant on animal models and human clinical trials, but for some time now scientists have been working on an alternative and more ...

During fasting or exercise, immune cells (red) migrate to the pancreas and stimulate glucagon-producing cells (orange) to regulate blood sugar, with cell nuclei shown in blue. “For decades, immunology ...