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. 2022 Mar 18;10(3):655. doi: 10.3390/microorganisms10030655

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© 2022 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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Killing curves of the cells free supernatants (CFS) obtained from 96 h broth cultures of Bifidobacterium asteroides BA15 (CFS_BA15) and Bifidobacterium asteroides BA17 (CFS_BA17) at different dilution factors: 1:4 (purple curve); 1:8 (light blue curve); 1:16 (red curve); 1:32 (light purple curve), against Escherichia coli ATCC 9637 (black curve) and Staphylococcus aureus ATCC 29213 (green curve). Killing curves of CFS_BA15 (A) against E. coli ATCC 9637; (B) against S. aureus ATCC 29213. Killing curves of CFS_BA17 (C) against S. aureus ATCC 29213; (D) against E. coli ATCC 9637.