Fig. 4.
Histological analysis of β-gal expression in the TA muscle of treated animals. Mice were treated with 5×1012 VP/kg of Ad5LlacZ, Ad5SlacZ and Ad5SpKlacZ by direct TA injection or systemically by intraperitoneal (IP) or intravenous (IV) injection. The TA muscle was removed 24 h post-treatment, fixed, sectioned and stained for β-gal activity. Sections were viewed using an AxioCam Axiophot2 light microscope at 10× magnification.