AAT protein expression. The diaphragm of each rAAV1-CMV-hAAT-treated animal was harvested in six sections (right and left). Representative images are shown from control (A, H), and treated animal #1 right (B–D) and left (I–K), and animal #2 right (E–G) and left (L–N). While most of the sections show widespread AAT expression, three sections of the right diaphragm (C, F, G) showed more modest AAT expression levels. Color images available online at www.liebertpub.com/humc