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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Small. 2019 Sep 29;15(46):e1903747. doi: 10.1002/smll.201903747

Figure 5. Ex vivo fluorescence microscopy and histopathology.

Figure 5.

Fluorescence micrographs of UPSN-FITC accumulation (green) with respect to blood vessels (CD31: red) on the periphery and in the center of (A) 4T1, and (B) MDA-MB 231 tumors. DAPI: nucleus. (C,D) CD31 expression in the two tumor groups. Left to right: Whole tissue section, CD31 expression at the periphery (left panel) and core (middle panel) (scale bar: 100 μm). Right panel shows higher magnification images of blood vessel morphology in the highlighted section (red box) (scale bar: 50 μm). Scale bar: 50 μm.