FIG. 1.

Production of IL-8 by infected HT-29 cells overtime. HT-29 cells (confluent monolayers) were infected with M. avium 101 (MAC101) (MOIs of 1, 10, or 100) for several days, and IL-8 production was measured in the supernatant after 1, 2, 3, 4, and 7 days. Results are shown for the assays by using an MOI of 10. Cells infected with S. typhimurium produced 343 ± 29 pg of IL-8 per ml after 24 h (data not shown).