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(a) The number of cells cultured in experimental media on Days 1, 3, 5, and 7. (b) Comparison effects of A‐PRF‐XBSM mixture exudate on the proliferation of hPDLSCs in various concentrations in vitro at different at time points. hPDLSC, human periodontal ligament stem cell. (p value: *p < .05, **p < .01, ***p < .001).
