Skip to main content
. 2015 Jan 15;9(3):1089–1094. doi: 10.3892/ol.2015.2881

Figure 2.

Figure 2

Proliferation of the human umbilical vein endothelial cells (HUVECs) and the A549 cell line. The proliferation rates of the HUVECs and the A549 cells were assayed using a WST-1 assay. The absorbance is presented as the mean ± standard error of the mean. (A) The proliferation rate of the HUVECs in the co-culture and culture-alone groups demonstrated no difference between days one and four (absorbance, 0.0741 and 0.0751, respectively; P=0.1845). However, the proliferation rate of the HUVECs in the co-culture group significantly increased on day five (absorbance, 0.8152 and 1.0274; P<0.001). On average during the eight days, the absorbance of the HUVECs in the co-cultured group was 0.1660±0.1304, while the absorbance of the control group cells was 0.1389±0.1003 (P=0.0448). (B) The mean absorbance of the A549 cells in the co-culture group was 0.7927±0.4877 compared with 0.6610±0.4304 in the cultured-alone group (P=0.036). It was therefore hypothesized that the cells interacted and promoted the proliferation of the other cell line.