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Functional analysis of the SF-induced U937 cells in in vitro cell differentiation assay. After 48 h of SF induction, the cell culture media was used for the estimation of cytokines as a form of a functional analysis of the induced cells; the levels of IL-6, TNF-α, MMP-13, and MMP-8 in the cell culture media are shown in the scatter plots (A), (B), (C), and (D), respectively; for statistical significance—** p < 0.01, and *** p < 0.001 when compared to control.
