Fig. 1

Viability and endotoxin test of MAC-T cells by MTT assay after 24 h of treatment with isoliquiritigenin (ISL). A Cell viability was measured using the MTT assay, where the viability of nontreatment control cells was set as 100%. B Cell endotoxin (ET) was tested using ELISA. Values represent the means ± SEM of three independent experiments. In the above bars, the same letters indicate P > 0.05; different lowercase letters indicate P < 0.05 while different uppercase letters indicate P < 0.01