Hand transplant

Standing hip abduction exercise with resistance tubing

The standing hip abduction exercise targets the hip muscles. See how it's done.

Humira: Important Precautions and Side Effects

A discussion of common side effects and precautions related to Humira use.

• Humira

Barium enema

See what to expect during an X-ray examination of your colon.

Repatha: Uses, How It Works, and Common Side Effects

Repatha is a medicine used to help reduce levels of bad cholesterol (low-density lipoprotein, or LDL) circulating in your blood. It is a type of human monoclonal antibody.

• Repatha

Macular degeneration

This animation shows the process of macular degeneration in the eye. The macula is the part of the retina that distinguishes fine details at the center of the field of vision. Macular degeneration results from a partial breakdown of the insulating layer between the retina and the choroid layer of blood vessels behind the retina. Macular degeneration results in the loss of central vision only.

• Vision