Fig. 3

High expression of hsa_circ_0055538 promotes apoptosis in OSCC cells. a, b Annexin V-FITC/PI dual-label flow cytometry was performed to determine the apoptotic rate in SCC9 (a) and CAL27 (b) cells. Data are presented as mean ± SEM of three independent experiments. Student’s t-test, ***P < 0.001