Fig. 5. Relationship of taurine uptake and NaCl concentration/medium osmolality in mussel taurine transporter (muTAUT)- and tilapia taurine transporter (tTAUT)-injected oocytes. Closed symbols indicate taurine uptake in various NaCl concentrations indicated in the lower horizontal axis. Open symbols represent taurine uptake in 100 mmol l^-1 NaCl concentration with various medium osmolalities adjusted by the addition of glycerol (upper horizontal axis). Values obtained under the same conditions with uninjected oocytes were subtracted from those of corresponding injected samples.