text:  Heart_S020401-144_Zidovudine_5d Heart, Zidovudine, 5d strain: Sprague Dawley, CD-IGS; tissue: Heart; compound: Zidovudine; dose: 1540 mg/kg; time: 5 d; vehicle: Corn Oil; route: Oral Gavage; Sex: Male; rna extraction date: 2003-07-23; hybridization date: 2003-07-31