Fig. (3).

Changes of water content (determined as [14C] urea space) in astrocytes (a) and neurons (b) in primary cultures by an elevated K+ concentration and/or addition of AVP. The following incubation conditions were used during a 30-min period: control (5 mM potassium) (□); AVP 10-12 M added to control (■); 60 mM potassium ( ); 60 mM potassium plus 10-12 M AVP ( ). SEM values are indicated by vertical bars. *Significantly (p<0.05) different from the control; **Significantly different from value obtained at the same K+ concentration (60 mM) in the presence of AVP. From Chen et al., 1992 [13].