Sustained inhibition of Lucifer yellow dye transfer following lindane exposures of different durations. Lucifer yellow dye transfer between myometrial cells was inhibited 24 h after initiating 10-min, 1-h or 24-h treatments with ethanol (solvent control) or 100 μM lindane. ANOVA, p ≤ 0.0001. Mean values ± S.E.M. are shown (n = 5–8 culture dishes; 7–22 cells were injected per dish). Vertical bars with different letters have means that are significantly different from each other in pair-wise comparisons (Student-Newman-Keuls, p ≤ 0.05).