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Figure 4 Symptomatic improvements at eight weeks post-treatment: a greater percentage of Ad5FGF-4 patients (compared with placebo) had symptomatic improvement, with 30% of patients having no angina and 43% of patients using no nitroglycerin (NTG) at eight weeks; however, these differences were not significant. White bars = Ad5FGF-4; black bars = placebo.