(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) = (s)-lactate(in) + 2 na(+)(in)