Fig. 11.
AQP2 phosphorylation in isolated IMCD suspensions in the presence of vasopressin, tolvaptan dose-response. Tolvaptan/vehicle preincubation period was 30 min followed by addition of AVP at the indicated concentration or vehicle. Values are normalized band densities covering all bands (means ± SE); n = 4. *Statistical significance (P < 0.05, ANOVA with Bonferroni contrast).