@WesElyMD ah. this sentence was confusing "we found brain swelling due to decreased blood flow and heightened activity in microglial cells, the so-called white matter in brains that support the neurons that transmit thoughts and help store information"
@kswilcox the main component of white matter that I was referring to in this article are axons, but it is also the case that glial cells are present in both gray and white matter.