Fluorescein DHPE is a phospholipid that is labeled on the head group with the bright, green-fluorescent fluorescein dye. Because of fluorescein's photolability, fluorescein DHPE is a useful reagent for measuring lateral diffusion in membranes using fluorescence photobleaching recovery methods. Fluorescein DHPE has also been used in co
njunction with polyclo
nal anti杅luorescein dye antibody to prepare colloidal gold probes for SPT diffusion measurements in supported phospholipid bilayers and in keratocyte plasma membranes.