text:  Spleen_S011023-147_Methotrexate_0.3 mg/kg_0.25d Spleen, Methotrexate, 0.25d strain: Sprague Dawley, CD-IGS; tissue: Spleen; compound: Methotrexate; dose: 0.3 mg/kg; time: 0.25 d; vehicle: Corn Oil; route: Oral Gavage; Sex: Male; rna extraction date: 2002-01-30; hybridization date: 2002-02-04