Fig. 4. Loss of the K⁺-conductance of the basolateral membrane of principal cells after metabolic inhibition with CN. K⁺-conductance was evaluated by the effects of a tenfold increase in bath [K⁺], from 3.4 mmol l^-1 to 34 mmol l^-1, on the basolateral membrane voltage V_bl and input resistance R_pc of principal cells of Malpighian tubules isolated from Aedes aegypti. Values are means ± S.E.M. of five cells. NS, not significant.