Fig. 7

Preferential enhancement by FCCP of nimodipine-insensitive Ca²⁺ transients. a A representative experiment showing the effect of 2 μM nimodipine on 20 K⁺-induced Ca²⁺ response (an average of 12 cells) in the absence and then presence of 0.1 μM FCCP. Superimposition of Ca²⁺ transients to show the similar effect of FCCP on the Ca²⁺ transient evoked in the absence (b) and presence (c) of nimodipine. d Superimposition of subtracted traces (a – b and c – d) to show the minimal effect of FCCP on the nimodipine-sensitive Ca²⁺ transient. e Superimposition of subtracted traces to show that the FCCP-enhanced Ca²⁺ transients were similar in the absence (c – a) and presence (d – b) of nimodipine, indicating that FCCP selectively enhanced nimodipine-insensitive Ca²⁺ rise