text:  Liver_S020108-271_Sildenafil_14.6 mg/kg_3d Liver, Sildenafil, 3d strain: Sprague Dawley, CD-IGS; tissue: Liver; compound: Sildenafil; dose: 14.6 mg/kg; time: 3 d; vehicle: Saline; route: Oral Gavage; Sex: Male; rna extraction date: 2002-01-15; hybridization date: 2002-01-18