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. 2018 Apr 23;8:6392. doi: 10.1038/s41598-018-24646-y

Figure 6.

Figure 6

Patterned Dll4 lines result in unidirectional endothelial sprouting. Direction of 5 × 5 pixel matrices was calculated for all ROI of either side of the vessel mimicking monolayer in one microscopy image, using the Image J plugin ‘Directionality’. (a) The dispersion of the fitted graph through the histograms in degrees. (b) The correctness of this fit through the direction histograms. *p < 0.05, **p < 0.01 ***p < 0.001, ****p < 0.0001. NP n = 15, BO n = 21, BD-A n = 23, BD-B n = 13, BD-C = 22. (c) Histogram of the directions found in the no print condition (d) for the bead-only control condition and (e) for the patterned Dll4 condition, with similar chips BeadDll4-B and C (f and g).