Correction to: Scientific Reports https://doi.org/10.1038/s41598-019-39749-3, published online 27 February 2019

In this Article, Figure 1a is a duplication of Figure 1b. The correct Figure 1 appears below as Figure 1.

Figure 1
figure 1

Relative efflux pumps encoding gene transcription during S. flexneri infection of (A) U937 and (B) Caco-2. Quantitative analysis of 14 efflux pump transcripts was performed by means of Q-Real Time PCR assay. Total RNA was extracted from intracellular S. flexneri M90T bacteria at various time points p.i., from 0 h (corresponding to bacterial adhesion to the target cells, see MM) up to 3 h. Each infection was repeated three times and at least three wells were run for each sample. The x axis indicates the expression fold-change (RQ value) for each gene on a logarithmic scale. The results are shown relative to the expression of each gene in bacteria grown in RPMI (A) or DMEM (B) set to 1.00. Statistical significance was determined by a one-tailed ANOVA, and p values are as follows: *p < 0.05, **p < 0.01. Error bars represent SD.