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(a) Plot of minimum vascular volume fraction vs oxygen consumption rate qO2. [(b) and (c)] Plots of vascular diameter D and spacing H vs qO2 for the optimized models in (a). For all models, ΔP=20 cm H2O, η=0.7 cP,L=2 cm, K=10−10 cm4∕dyn s, and kO2=1.2×10−9 mol∕cm3 mm Hg.
