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. 2006 Oct 13;92(1):356–365. doi: 10.1529/biophysj.106.093468

FIGURE 2.

FIGURE 2

Experimental results. Core radius is the radius of the central spheroid. Invasive radius denotes the outer rim of the invasive region. (a) U87WT spheroids are more invasive than U87ΔEGFR spheroids. (b) The cores of the U87WT and U87ΔEGFR spheroids grow at approximately the same speed after day 1, but the U87WT core decreases in size in the first day in the collagen gel. (c) A log plot of cell density on day 3 as a function of position. The dashed line on the left of each plot denotes the core boundary and the dashed line to the right denotes the boundary of invasion.