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. 2020 May 28;11:802. doi: 10.3389/fphar.2020.00802

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Copyright © 2020 Ni, Duan, Zhou, Liu, Wan, Gui and Zhang

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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CoMSIA contour maps in combination with apigenin. (A) Steric field: green, steric bulk desirable regions; yellow, steric bulk undesirable regions. (B) Electrostatic field: blue, positive charge desirable regions; red, negative charge desirable regions. (C) Hydrophobic field: yellow, hydrophobicity desirable regions; white, hydrophobicity undesirable regions. (D) Hydrogen-bond donor field: cyan, donor desirable regions; purple, donor undesirable regions. (E) Hydrogen-bond acceptor field: magenta, acceptor desirable regions; red, acceptor undesirable regions.