Fig. 4From: Emergence of plasmid-mediated mcr genes from Gram-negative bacteria at the human-animal interfaceAgarose gel electrophoresis of mcr genes. Sample 1 shows the amplification of mcr-2, while specimens 3–7 show the amplified mcr-1 gene products. A 100 bp ladder (L) was included on both sides of the gel to estimate the gene sizes. Negative (Neg.) and positive (Pos.) controls were included in each gelBack to article page