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. 2021 May 21;9(6):1112. doi: 10.3390/microorganisms9061112

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Growth characteristics of 12/111, 12/111ΔphiA and 12/111ΔrelB-metK pTCVp_TET::metK: (A) macroscopic appearance of TH 1% glucose broth (flask) and culture sediment (round section); (B) bacterial examination by Gram staining (×100 objective); (C) bacterial cluster examination by SEM; (D) glycocalyx observation by TEM, where arrows indicate glycocalyx-like structures.

Growth characteristics of 12/111, 12/111ΔphiA and 12/111ΔrelB-metK pTCVp_TET::metK: (A) macroscopic appearance of TH 1% glucose broth (flask) and culture sediment (round section); (B) bacterial examination by Gram staining (×100 objective); (C) bacterial cluster examination by SEM; (D) glycocalyx observation by TEM, where arrows indicate glycocalyx-like structures.