To detect the secreted CXCL2, CXCL11, and CCL19 levels, cell culture supernatants were harvested after 48 h and analyzed using CXCL2, CXCL11, and CCL19 Human enzyme-linked immunosorbent assay (ELISA) Kit (Yuanmin Biotechnology, Shanghai, China) according to the manufacturer’s protocols.
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