Figure 4: Rohdamine-123 uptake in rifampin-free (A) or rifampin-treated (B) LL-CPK1 cells. Cells were exposed to either medium-only or 20 % NL or 20% HL serum for 24 h and then rohdamine-123 (10 μM) uptake was measured. Data are expressed as percent uptake relative to cells exposed to rifampin-free medium-only (equivalent to 100%). One way analysis of variance followed by Dunn's test or Holm-Sidak test were used to assess differences among the groups at each time point. Breaks between horizontal lines above data bars denote significant differences from other data point(s).