Figure 2.

Effect of isotonic gradients (100 mM) of myo-inositol and urea on the cell volume of rat primary OMCD principal cells. A typical recording profile with myo-inositol incubation is given in (A) and the profile of the mean and SE of 18 experiments in (B). Typical recording profile of rat primary outer medullary collecting duct principal cells incubated with urea (C) and profile of mean and SD of 18 experiments (D). The (B,D) are the second part of the curves of (A,C) respectively, reflecting cell volume changes. They are normalized to the starting volume and the mean values of every point are used to get the mean profiles.