The KCC-3 ion transporter, shown here in green, is expressed in glial cells but only near a particular neuron, shown in red. Credit: Laboratory of Developmental Genetics at The Rockefeller University/Cell
Glial cells nourish, protect, and support neurons, but their role is far from passive. A new study shows how they can change the shape of nerve endings by interacting with them through a previously unknown molecular pathway and distinguish between the different types of neurons they encase. More than half of our brains are made up of glial cells, which wrap around nerve fibers and insulate them allowing electrical and chemical impulses to travel faster. In the past, neuroscientists considered the glial cell an essential yet passive helper of nerve cells...
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