Figure 3: (a) Mean immobility duration in sec. ( SEM) of 35 days old Wistar rats after chronic administration of antidepressants (desipramine, fluoxetine, DHEAS) or saline ( = 8 in each group). (b) Mean immobility duration in sec. ( SEM) of 35 days old WKY rats after chronic administration of antidepressants (desipramine, fluoxetine, DHEAS) or saline ( = 8 in each group). .