Figure 3
From: A new plasmid vector for DNA delivery using lactococci
Gene expression analysis after invasion assays. A: In vitro gene transfer after 48 hours following invasion of Caco-2 cells with L. lactis strains carrying pValac:gfp assessed by FACS. A1: LL-inlA+ pValac:gfp+; A2: LL-pIL253 pValac:gfp+ (negative control). B: Epifluorescent micrograph of GFP expression by Caco-2 human epithelial cell line after internalization. B1: LL-inlA+ pValac:gfp+; B2: LL-pIL253 pValac:gfp+.