Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Save this search Download search results Subscribe to news feed Your filters: cql: author="Popma-De Graaf, Ditta J" or (type any "bookEditor journalEditor issueEditor" and editor="... Add to list Journal Article A1 open access Toll-like receptor agonists as adjuvants for inactivated porcine reproductive and respiratory syndrome virus (PRRSV) vaccine Sandra Vreman, Joanne McCaffrey, Ditta J Popma-de Graaf, Hans Nauwynck (UGent) , Huub FJ Savelkoul, Anne Moore, Johanna MJ Rebel and Norbert Stockhofe-Zurwieden (2019) VETERINARY IMMUNOLOGY AND IMMUNOPATHOLOGY. 212. p.27-37 Add to list Journal Article A1 Characterization of immune responses following homologous reinfection of pigs with European subtype 1 and 3 porcine reproductive and respiratory syndrome virus strains that differ in virulence Eefke Weesendorp, Norbert Stockhofe-Zurwieden, Hans Nauwynck (UGent) , Ditta J Popma-De Graaf and Johanna MJ Rebel (2016) VETERINARY MICROBIOLOGY. 182. p.64-74