(D) MTS detection of the viability of mouse peritoneal macrophages (PM), THP1 and PBMC cells left untreated (DMSO) or treated with Palbociclib (1 μM, 10 μM) for 4 h. The data shown are mean ± SEM from n=3 biological replicates. Statistical significance was determined by one-way ANOVA. ns, not significant. 