Figure 1From: A systems biology approach to invasive behavior: comparing cancer metastasis and suburban sprawl developmentStructural Similarities. The figure on left shows multiple tumors derived from colon cancer that has metastasized to the liver. The right shows nighttime imaging of the United States. Both structures demonstrate a diffuse, fractal-like structure of invasiveness. Satellite image is courtesy of the Image Science and Analysis Laboratory, NASA Johnson Space Center. Liver section image is courtesy of Peter Isaacson, University College, London.Back to article page