Brain biochemical parameters and disturbance of conditioned reflex activity of orchidectomized rats

Effect of thymoptin on passive avoidance reaction conditioning in 18-month-old and castrated rats

“…Castration was performed as described earlier [3]. The castrated animals received the preparation starting from the 10th day postoperation according to the following two schemes: a single injection 1 hour before conditioning or injections during 5 days (the last one given 1 hour before conditioning).…”

“…Conditioned-response activity was assessed by PAR as described previously [3]. The animals were tested 24 hours after conditioning.…”