Molecular aspects of Listeria monocytogenes infection. 
Listeria monocytogenes, a food-borne intracellular animal and human pathogen, interacts with infected host cells both prior to entry and during the intracellular phase of infection.  This review is focused on the role of secreted proteins, including listeriolysin O and two distinct phospholipases C, in modulating the signal transduction of infected cells.