Fig. 1.

Leukocyte labeling with ${\mathrm{GNR}}^{\mathrm{CD}45}$. (a) Schematic of leukocyte labeling with ${\mathrm{GNR}}^{\mathrm{CD}45}$. (b) From left to right OCT images of 0.5 nM GNR solution, 0.05 nM GNR solution, unlabeled leukocytes, and ${\mathrm{GNR}}^{\mathrm{CD}45}$-labeled leukocytes. All samples were loaded into $400\mu \mathrm{m}$ internal diameter glass capillaries for OCT imaging and imaged together. $\text{Scale bar}=100\mu \mathrm{m}$. (c) Mean of log of OCT intensities from contiguous regions of size 10 pixels or larger within the dotted boxes shown in (b). Data pooled over 150 B-scans from three independent experiments. * $p$ value $<0.001$ (unpaired $t$-test).