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Pentoxifylline treatments (PTX: 10, 25, and 50 mg/kg, 15 days) reverse the decreased immobility time in the 6-OHDA group, relatively to the untreated 6-OHDA rats, in the forced swimming test. The values are means ± SEM from 8 to 9 animals per group. A and B versus SO; C and D versus 6-OHDA; p = 0.0234 to p < 0.05 (two-tailed Student's t-test).
