Snapshots of Life: Visualizing Blood Vessels

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10/23/2014 09:00 AM EDT
Credit: Christopher V. Carman and Roberta Martinelli, Harvard Medical School, Boston
This might look a bit like a fish net, but what’s actually caught in this image is the structure of the endothelium—the thin layer of cells lining your blood vessels that controls the flow of molecules in and out of the bloodstream. The red lines are the actin filaments that give each endothelial cell its […]