During pregnancy and for some time after giving birth, a woman’s immune response in the brain may be tuned down, a new study in rats suggests.
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Microglia, immune cells that reside in the brain and spinal cord, are a first-line defense against infection in the central nervous system. But the immune cells play more than a protective role—they also help shape developing neural circuits.
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Most pregnant mothers will go to great lengths to avoid being sick, and science suggests that their concerns may be well founded.
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