Figure 6. Kir2.1 function in cerebral artery dilatation may be endothelial independent.

A, average K⁺‐induced dilatation of pre‐constricted denuded cerebral arteries from WT mice as a function of K⁺ doses of 10, 15, 20 and 40 mm (n = 5 arteries per condition). B, average dilatations in response to 20 mm KCl. PAP, papaverine (added at 40 mm KCl to check the vessels’ maximum dilatation).