The Food and Drug Administration Monday unveiled the details of a new policy designed to make it easier and quicker for patients with very rare diseases to get cutting-edge treatments. The new ...

Jason Mast is a general assignment reporter at STAT focused on the science behind new medicines and the systems and people that decide whether that science ever reaches patients. You can reach Jason ...

Mechanical barriers to pathogen invasion include the configuration of the upper airway and nasal filtering function. The continual branching of the bronchial tree, up to 20 times, into progressively ...