The inhibitory effect of WE(2-1) and AL(2-1) on the production of proinflammatory cytokines (TNF-α and IL-6) from LPS-treated RAW 264.7 cells was determined. The supernatants were subsequently employed for the proinflammatory cytokine assays using a mouse enzyme-linked immunosorbent assay (ELISA) kit (R&D Systems, Minneapolis, MN, USA).
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