How antibodies attack the brain and muddle memory

In mice, these immune molecules gone awry target a key message-sensing protein on nerve cells

a colorful scanning electron micrograph showing a close-up of brain nerve cells

ATTACK OF THE ANTIBODIES  This scanning electron micrograph shows a close-up of brain nerve cells. Antibodies that target nerve cell connections may interfere with vital brain functions such as memory.

Ted Kinsman/Science Source

Antibodies in the brain can scramble nerve cells’ connections, leading to memory problems in mice.