K(+)(in) + chloride(in) <=> K(+)(out) + chloride(out)
k(+)(in) + chloride(in) <=> k(+)(out) + chloride(out)
K(+)(in) + chloride(in) <=> K(+)(out) + chloride(out)
k(+)(in) + chloride(in) <=> k(+)(out) + chloride(out)