The use of iNOS inhibitors, including aurintricarboxylic acid, dexamethasone and valproic acid, to increase the yield of a variety of viruses in culture, including recombinant herpesviruses is described.Utilisation dinhibiteurs diNOS, comprenant lacide aurintricarboxylique, la dexaméthasone et lacide valproïque, pour accroître le rendement de divers virus en culture, dont lherpèsvirus recombiné.