Doctors prescribe steroids for many conditions, from asthma to autoimmune diseases. Learn what they treat, how they work, and the risks of long-term use.
Ablative lasers resurface skin by removing outer layers to treat wrinkles, scars, and sun damage. Learn how they work, what recovery involves, and who's a good candidate.
Gel electrophoresis separates DNA and proteins by size using an electric field, helping scientists diagnose disease, identify criminals, and study biology.