Fig. 3. Time courses of changes in cell volume after increasing the external osmolarity by 60 mosmol l^-1 in five different groups of P. multimicronucleatum adapted to different osmolarities. (A) 104 mosmol l^-1-adapted cells were subjected to 164 mosmol l^-1. (B) 84 mosmol l^-1-adapted cells were subjected to 144 mosmol l^-1. (C) 64 mosmol l^-1-adapted cells were subjected to 124 mosmol l^-1. (D) 24 mosmol l^-1-adapted cells were subjected to 84 mosmol l^-1. (E) 4 mosmol l^-1-adapted cells were subjected to 64 mosmol l^-1. Each plot for cell volume is the mean±S.D. (N=3) and presented as a value relative to the cell volume before increasing the external osmolarity (at time 0).