Figure 1From: Apical membrane P2Y4 purinergic receptor controls K+ secretion by strial marginal cell epitheliumSummary recordings of Isc (Ussing chamber) of strial marginal cells during apical perfusion of A) ATP (10-3 M; 30 s; n = 6), B) UTP (10-4 M; 30 s; n = 7) and C) Ap4A (3 × 10-4 M; 60 s; n = 4). Vertical bars are SEM (not all shown; spaced for clarity).Back to article page