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. 1998 Apr 28;95(9):5251–5256. doi: 10.1073/pnas.95.9.5251

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Copyright © 1998, The National Academy of Sciences

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Expression of β-gal in left ventricular sections 2 days following infection with Ad.βgal and Ad.PL. (Upper) Photomicrographs of two left ventricular sections stained for β-gal 2 days following infection with Ad.βgal. These sections show the variability of β-gal expression within the same heart with the catheter-based method of gene delivery. (Lower) Photomicrographs of two left ventricular sections stained for β-gal 2 days following infection with Ad.PL. No β-gal expression is observed.