. 2021 Jul 13;12:687511. doi: 10.3389/fmicb.2021.687511
Copyright © 2021 Gu, Chen, Zhang, Guo, Wu, Sun, Wei, Wang, Wei, Zhang, Ye, Xue, Pang, Ding and Wu.
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FIGURE 4.
Biofilms on the PHPS observed under SEM (CK, control check; T, treatment).