Sequential 2PEF Images That Demonstrate Flowing and Stalled Capillaries in the Cerebral Cortex (Images Captured Every .3 Seconds for a Total of 1.2 Seconds of Observation). Texas Red-dextran was intravenously injected to label blood plasma (bright), leaving the cellular components unlabeled (dark).Figure reprinted from Santisakultarm TP et al, J Thromb Haemost. 2014;12:2120-2130.