Fig. 2

Histological evaluation of anti-inflammatory effects of methanolic extract of P. niruri a Normal control, b Carrageenan control, c 20 mg/kg ibuprofen, d 100 mg/kg methanolic extract of P. niruri, e 200 mg/kg methanolic extract of P. niruri, f 400 mg/kg methanolic extract of P. niruri. Each group was assessed at 400× magnification, scale bar: 20 μm; “I” indicates numerous infiltrations of inflammatory cells in the specimen from the rats paw tissue