Researchers stumble onto a new role for breast cancer drug

Tamoxifen stops immune cells from destroying injured eye cells in mice

microglia

MEGA MICROGLIA  Microglia (green, in a mouse retina) are one of the first immune responders when photoreceptor cells are damaged or diseased. But when microglia kill those injured cells, vision loss can occur.

MINHUA WANG/WONG LAB

When the eyes of her mice looked normal, Xu Wang was certain she had done something wrong.