Withdrawal Notice

This paper was originally published in Aging Advance Online Publications on November 20, 2020.

In compliance with Aging's withdrawal policy, the paper was withdrawn in its entirety. It will not appear in Aging internal or any external indexes or archives.

WITHDRAWN: The in vitro osteogenesis induction by a nano-hydroxyapatite composite that combined with miRNA-27b overexpression exosomes

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Figure 1. Characterization and identification of HMSC-27b-EV. (A) TEM imaging of HMSC-27b-EV, 5 parallel samples were analyzed; (B, C) The size distribution and Zeta potential of HMSC-27b-EV measured by DLS, 5 parallel samples were analyzed; (D) The detection of CD9 and CD63 in exosomes by western blot; (E) The levels of CD9 and CD63 in HMSC-27b-EV that detected by Flow cytometry; (F) miRNA-27b concentration in HMSC-27b-EV detected by RT-PCR, and HMSC • EV@nHAC was set as the control group. n = 5, *p < 0.05 as determined by Student's t-test.