the photoinduced volume change was practically the same in all cases studied ( equal ionic constitutions inside and outside of vesicles ; in the presence of penetrating anion scn- ; under ionic gradients on vesicle membranes ; in the presence of ionophores which induce the permeability for k+ and h+ ) and corresponds to the appearance of no more than one ion inside the vesicle under bleaching of one rhodopsin molecule .
C0003075
anion
C0022023
ion