Fig. 7. Time courses of short-circuit current (I_sc), transepithelial conductance (G_T) and transepithelial capacitance (C_T) during basolateral (Bl) serial stimulation with adenosine and the Nigella arvensis (NA) extract. First, 1 µmol l^-1 adenosine was added at the basolateral side, followed by addition of 250 µl l^-1 NA extract under transporting conditions. The same solution conditions were used as in Fig. 1. The traces are mean values from six tissues; dotted lines represent means ± S.E.M.