How cancer spreads

Cancer of the throat or larynx

From a top view of the voice box (larynx) and vocal cords, this animation shows the formation of a malignant tumor on the right vocal cord.

• Cancer

Squat exercises for leg muscles

The squat is an exercise that targets the leg muscles. See how it's done.

Forearm stretches for the workplace

Forearm stretches can help prevent stiffness. Try these stretches at work.

Intuniv (guanfacine): Introduction and ADHD Overview

An overview of childhood Attention Deficit Disorder Hyperactivity (ADHD) and the non-stimulant treatment Intuniv (guanfacine).

• Intuniv
• ADHD

Parkinson

This animation shows sporadic brain activity and a twitching hand that occur with Parkinson's disease, followed by treatment with dopamine stimulation.

• Parkinson's Disease