guanosine(in) + Na(+)(in) => guanosine(out) + Na(+)(out)
guanosine(in) + na(+)(in) => guanosine(out) + na(+)(out)
guanosine(in) + Na(+)(in) => guanosine(out) + Na(+)(out)
guanosine(in) + na(+)(in) => guanosine(out) + na(+)(out)