Figure 10.
Single-channel K+ currents in cell-attached patches of human pulmonary artery smooth muscle cells (PASMC). (a) Recordings from a human PASMC showing the variability of current amplitudes (a–f) within the same patch. The horizontal broken line indicates the level of currents when the channels are closed. Unitary Kv (b) and Kca (c) openings can be sustained (a) or flickery (b). (c). View of flickery and sustained iK(Ca) on expanded time scales