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. 2019 Dec 18;8(1):5. doi: 10.3390/microorganisms8010005

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© 2019 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 (http://creativecommons.org/licenses/by/4.0/).

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Tracing of the suspected colonies from probiotic powder using rep-PCR analysis. (a) Primer (GTG)₅; lane 1—marker 1 kb, lane 2—marker 100 bp, lane 3–17 (colonies PP1–PP15), lane 18—LB41^P strain, lane 19—marker 100 bp, lane 20—marker 1 kb; lower half of the gel: lane 21—marker 1 kb, lane 22—marker 100 bp, lane 23–37 (colonies PP16–PP30), lane 38—LB41^P strain, lane 39—marker 100 bp, lane 40—marker 1 kb. REP primer (b); ERIC primer (c); lane 1–15 (colonies PP1–PP15), lane 16—LB41^P strain, lane 17—marker 100 bp, lane 18—marker 1 kb; lower half of the gel: lane 19–33 (colonies PP16–PP30), lane 34—LB41^P strain, lane 35—marker 100 bp, lane 36—marker 1 kb. Positive control—LB41^P.