(S)-lactate(in) + 2 Na(+)(in) => (S)-lactate(out) + 2 Na(+)(out)
(s)-lactate(in) + 2 na(+)(in) => (s)-lactate(out) + 2 na(+)(out)
(S)-lactate(in) + 2 Na(+)(in) => (S)-lactate(out) + 2 Na(+)(out)
(s)-lactate(in) + 2 na(+)(in) => (s)-lactate(out) + 2 na(+)(out)