Fig. 3From: Characterization of internalin genes in Listeria monocytogenes from food and humans, and their association with the invasion of Caco-2 cellsThe ability of 21 L. monocytogenes isolates to invade human Caco-2 epithelial cells in vitro. Isolates with inlA PMSC mutations are marked with “*”. A black square indicates inlA positiveBack to article page