Table 1.

Experimental groups and treatment protocol in our study.

Group	Description
Group I, NC (normal control)	Rats received saline
Group II, GBC (Ginkgo biloba extract control)	Rats received GB by oral gavage 60 mg/kg /day for 10 days.
Group III, MTX (methotrexate)	Rats received 20 mg/kg MTX ip as a single dose on 5th day.
Group IV, GB+MTX (treated group with Ginkgo biloba extract and methotrexate)	Rats received GB by oral gavage 60 mg/kg/day for 10 days plus single dose 20 mg/kg MTX ip on 5th day.