And so we also see a bore effect taking place on this side. So less CO2 means more of that hemoglobin will be able to buy to more of that oxygen that is coming in. And so this is the double bore effect that takes place not only on the mother's side but also on the side of the fetus. So these three factors actually facilitate the exchange of gases inside our placenta. So we have the the ability of that fetal hemoglobin to actually bind to oxygen much more readily than the adult hemoglobin. That is factor number one.