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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: Acta Biomater. 2019 Mar 28;90:300–313. doi: 10.1016/j.actbio.2019.03.048

Figure 4 |. Tumor accumulation of NPs in a subcutaneous xenograft mouse model (4T1.2).

Figure 4 |

(A) Near-infrared images of mice at 2, 4, 12, 24, 36 h post-injection of free DiR and DiR-NP; (B) Fluorescence intensities of tumors at different time points (n=3, mean±SD); (C) Ex vivo fluorescence imaging of major organs and tumors 24 hours following injection of free DiR and DiR-NP; and (D) Relative normalized fluorescence intensity of major organs and tumors after 24 hours (n=3, mean±SD).