Fig. 7. Effects of TEA⁺ and K⁺ in the external solution on the time course of change in cell volume after changing the external osmolarity in P. multimicronucleatum. (A) 164 mosmol l^-1-adapted cells were transferred into a 10 mmol l^-1 TEA⁺-containing 104 mosmol l^-1 solution, (B) 164 mosmol l^-1-adapted cells were transferred into a 30 mmol l^-1 KCl-containing 104 mosmol l^-1 solution. (C) 104 mosmol l^-1-adapted cells were transferred into a 10 mmol l^-1 164 mosmol l^-1 TEA⁺-containing solution. (D) 104 mosmol l^-1-adapted cells were transferred into a 30 mmol l^-1 KCl-containing 164 mosmol l^-1 solution. Each plot for cell volume is the mean±S.D. (N=3) and presented as a value relative to the cell volume before changing the external osmolarity.