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Table 2 Rydell classification evaluation. The number of animals matching the various classification criteria was given

From: Salvianolic acid B reduced the formation of epidural fibrosis in an experimental rat model

Group Grade
0 1 2 3
Sal B (10 mg/kg, n = 10) 0 0 2 8
Sal B (30 mg/kg, n = 10) 6 3 1 0
Sal B (50 mg/kg, n = 10) 8 2 0 0
Control (saline, n = 10) 0 0 0 10