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(a) Effect of pretreatment with different concentrations of S. nigra fruit extract (EB) and fermented extract (FEB) prior to LPS (10 μg/mL) exposure on cell viability as measured by the Neutral Red assay. The data represent means ± SD (n = 3). * p < 0.05 compared with LPS-treated cells. (b) Photographs show the staining of the cells with propidium iodide and Hoechst 33342. Magnification: 200×.
