A. The ability of the soluble fluorescent dye Rhodamine 110 (485ex/530em) to diffuse across an 8 μm pore polycarbonate membrane was determined by adding Rhodamine to the top of a Boyden chamber and at the indicated time point determining the level of fluorescent dye that was in the lower chamber.
B. Level of retained calcein-AM within Jurkat cells at 30 and 180 minutes after labeling.
C. Level of calcein retention by Jurkat cells after a 4 hour exposure to increasing concentrations of SDF-1.