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(A) Confocal microscopy images of hMSCs incubated with HA/CS-RhB NPs, CS-RhB/TPP NPs (50 μg/20,000 hMSCs) for 240 min with or without monoclonal antiCD44 primary antibody (scale bar = 20 μm). (B) The red fluorescent intensity of HA/CS-RhB NPs and CS-RhB/TPP NPs localized in the cell cytosol. Results are presented as mean ± SD. Holm-Sidak multicomparison method, * p value < 0.05.
