TOPICS: Listeria monocytogenes, bacteria, gram positive, bacilli, rod, catalase positive, narrow zone of hemolysis, beta hemolysis, tumbling motility, rocket tails, actin polymerization, cell-to-cell, facultative intracellular, aerobe, aerobic, cold deli meat, unpasteurized dairy, cold temperature, TORCHES, pregnant, septicemia, gastroenteritis, amnionitis, spontaneuous abortion, granulomatosis infantiseptica, neonatal meningitis, immunocompromised, ampicillin