Authors: Maas, RA Venema, S Oei, HL Pol, JMA Claassen, IJTM ter Huurne, AHM

Citation: Ra. Maas et al., Efficacy of inactivated infectious bursal disease (IBD) vaccines: comparison of serology with protection of progeny chickens against IBD virus strains of varying virulence, AVIAN PATH, 30(4), 2001, pp. 345-354

Authors: Maas, RA de Winter, MPM Venema, S Oei, HL Claassen, IJTM

Citation: Ra. Maas et al., Antigen quantification as in vitro alternative for potency testing of inactivated viral poultry vaccines, VET Q, 22(4), 2000, pp. 223-227

Authors: Den Otter, W Balemans, L Battermann, JJ Bernsen, MR Cadee, JA Dobrowolski, Z Everse, LA Fiszer-Maliszewska, L Gavhumende, R De Groot, JW De Groot, K Hennink, WE Hill, FWG Jurgenliemp-Schulz, I Klein, WR Koten, JW Maas, RA Steerenberg, P Stewart, R Zembala, M

Citation: W. Den Otter et al., Local low-dose IL-2 therapy, HEP-GASTRO, 46, 1999, pp. 1280-1286

Authors: Maas, RA Oei, HL Venema-Kemper, S Koch, G Bongers, J

Citation: Ra. Maas et al., Dose-response effects of inactivated Newcastle disease vaccines: Influenceof serologic assay, time after vaccination, and type of chickens, AVIAN DIS, 43(4), 1999, pp. 670-677

Authors: Maas, RA Oei, HL Kemper, S Koch, G Visser, L

Citation: Ra. Maas et al., The use of homologous virus in the haemagglutination-inhibition assay after vaccination with Newcastle disease virus strain La Sota or Clone30 leads to an over estimation of protective serum antibody titres, AVIAN PATH, 27(6), 1998, pp. 625-631