From: Modulation of immunity in young-adult and aged squirrel, Funambulus pennanti by melatonin and p-chlorophenylalanine
Groups
Treatment
No. of young/aged squirrels
Control
0.9% saline/day
12/12
PCPA treated
4.5 mg/squirrel/day
PCPA + Melatonin
4.5 mg/squirrel/day +25 μg/squirrel/day
Melatonin
25 μg/squirrel/day