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. 2020 Feb 5;6(6):eaay7785. doi: 10.1126/sciadv.aay7785

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — Cellular uptake of NR@PPC–aPD-1 in B16F10 tumor cells at pH values of 7.4 and 6.5 determined by CLSM imaging (A) and flow cytometry (B) analyses (concentration of NR@PPC–aPD-1, 1 μM). Scale bar, 25 μm. Cellular uptake of NR@PPC–aPD-1 in RAW264.7 macrophages at pH values of 7.4 and 6.5 determined by CLSM imaging (C) and flow cytometry (D) analyses (concentration of NR@PPC–aPD-1, 1 μM). Scale bar, 25 μm.