a: amyloid plaques ~
b: a traffic jam


"To send messages to their neighbours (and on to the rest of the body), neurons use chemical transmitters that cross the gaps between cells. Here, amyloid plaques are like a traffic jam, blocking cell signalling. Connections between cells are lost - first in the hippocampus, the region in the brain for memory and learning. Neurons die and the affected brain tissue shrinks."

Writer: Clare Watson
Date: May 19 2017 12:42 AM

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