Elastica van Gieson staining of the cavernous body isolated from age-matched nude mice and nude mice injected with AdGFP_HUVECs or AdRas12V_HUVECs.

<p>The penises were isolated 2 weeks after AdGFP_HUVECs injection, and 2 (2W), 4 (4W), and 6 (6W) weeks after the AdRas12V_HUVECs injection. The penises were also isolated from nude mice that were not injected with HUVECs as the positive control (Positive Cont). The boxed areas corresponding to the dorsal penile nerve are enlarged and shown at the right lower corners. Scale bar = 200 μmeter.