Lung wet-to-dry weight ratio after intratracheal administration of AdVEGFA165. Increasing doses (109, 1010, or 1011 PU) of AdVEGFA165 or AdLacZ, or PBS, were administered intratracheally on day 0. On day 5, the lung wet-to-dry ratio was quantified. Data were obtained from n = 5 animals per group.