Length of tube networks formed by HAEC cultured on Matrigel. Image-Pro plus 6.0 for Windows software was used to measure the length of tube networks (pixels). The stained cells were inspected under a light microscope at ×100 magnification and captured more than three pictures from different fields. The average data from the same well was calculated as its quantitative value. Data are expressed as mean ± SD. **p < 0.01 vs. control.
Ge et al. Nanoscale Research Letters 2013 8:215 doi:10.1186/1556-276X-8-215