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. 2018 Apr 11;5(4):180219. doi: 10.1098/rsos.180219

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© 2018 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — Optimum number of bifurcation level N. (a) Human and (b) mouse. The minimum resistance to oxygen access corresponds to N = 18 where $\log [R_{total}^{ox} (N)] = 7.77$ for human placenta and N = 22 where $\log [R_{total}^{ox} (N)] = 10.55$ for mouse placenta.