E. faeciumCRL1879 Ct and estimated enterocin copy number by RT-PCR absolute quantification BacteriocinmRNA copies (copies μl -1) entA entB entP entSE-K4 entXα entXβ ent1879α ent1879β 2.4 x 105 9.2 x 104 2.4 x 107 2.5 x 105 1.6 x 106 2.7 x 106 7.7 x 105 7.2 x 105

*Estimated copy number of enterocin genes transcripts in E. faecium CRL 1879 cells at laboratory conditions, by RT-PCR absolute quantification.

Table 3: Enterocin transcripts copy number obtained by qRT-PCR.