Definition of "perivascular" []

• Around or surrounding a blood vessel (adjective)

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• "Instead of throwing the umbilical cord in the wastebasket, parents will have the opportunity to donate their newborn's cord to a national MSC bank where the cord perivascular cells HUCPVCs will be extracted and cryogenically preserved in nitrogen at -200 degrees for 15 to 20 years."
• "In the perivascular spaces, the pia apparently enters as a mesothelial lining of the outer surface of the space; a variable distance from the exterior these cells become unrecognizable and are apparently lacking, replaced by neuroglia elements."
• "Between the layers are cleft-like spaces which communicate with the subarachnoid cavity, and a number of bloodvessels which are enclosed in perivascular lymphatic sheaths."