Observed growth response (growth [○] and no growth [•]) and predicted boundaries between growth and no growth of Listeria monocytogenes on bologna stored at 4°C (A), 7°C (B), and 10°C (C), with respect to lactic acid concentrations and dipping times at growth probabilities of 0.1 (upper line), 0.5 (middle line), and 0.9 (lower line).