Fig. 2
From: Exposure to 3G mobile phone signals does not affect the biological features of brain tumor cells
The growth and apoptosis of human glioma cells measured after exposure. a The proliferation of U87-MG and U251-MG cells was measured using the CKK-8 assay from days 1 to 6 after exposure. Data represent means ± SD from five independent experiments. b Apoptosis of U251-MG and U87-MG cells were detected using the FITC-conjugated Annexin-V/PI assay after exposure for 12, 24, or 48 h. c Statistical analysis of the percentage of apoptotic cells in the different groups. Data represent means ± SD from three independent experiments