![]() It was only in the last decade or so that scientists realized glial cells were more than that. ![]() ![]() Glial cells lacked the ability to send electric signals, and most scientists thought they were housekeeping cells, helping provide nutrients and insulation. "We have 'neuron' but we don't have 'glion.' " "Glia is plural - there is no singular," Fields says. But early scientists thought they were so boring they didn't even merit a singular noun. The other kind of cell - glial cells - are at least as abundant as neurons. "We've only been studying one kind of cell in the brain." "We've overlooked half the brain," says Douglas Fields, a neuroscientist at the National Institutes of Health. Ramón y Cajal won the Nobel Prize for his work, and scientists focused on neurons for the next century.īut neurons aren't the only cells in the brain.
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