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. 2023 Jul 19;12(14):2740. doi: 10.3390/foods12142740

Figure 2.

Figure 2

Chitooligosaccharide (COS) prevented lipopolysaccharide (LPS)-induced cytotoxicity in RAW264.7 macrophage cells. (a) The cells were treated various concentrations of COS (25–1000 μg/mL) for 24 h. (b) The cells were treated with various concentrations of LPS (0.001–10 μg/mL) for 24 h. (c) The cells were pretreated with COS (25–500 μg/mL) for 24 h followed by 1 μg/mL LPS for 24 h. Cell viability was measured by 0.5 mg/mL of MTT assay. Results are shown as the mean ± SD (n = 4). * p < 0.05 vs. control cells. # p < 0.05 vs. the LPS group.