1. Recombinant live attenuated avian coronavirus vaccines with deletions in the accessory genes 3ab and/or 5ab protect against infectious bronchitis in chickens. Issue 8 (14th February 2018) Authors: van Beurden, Steven J.; Berends, Alinda J.; Krämer-Kühl, Annika; Spekreijse, Dieuwertje; Chenard, Gilles; Philipp, Hans-Christian; Mundt, Egbert; Rottier, Peter J.M.; Verheije, M. Hélène Journal: Vaccine Issue: Volume 36:Issue 8(2018) Page Start: 1085 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗