VEGFA and infection: Virus-containing [1 × 10 (8)PFU/ml oxygenated KHB at 37°C. Infection interval was fixed at 2 min, for a total Langendorff time of 180 min. Pretreatment with VEGF, TNG, 8Br-cGMP, L-NMMA, ODQ, sildenafil, zaprinast.