Proposal of a new serovar of Actinobacillus pleuropneumoniae: serovar 15 by Blackall, P.J., Klaasen, H.L.B.M., Van Den Bosch, H., Kuhnert, P., Frey, J.

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Development of Leptospira in vitro potency assays: EU/industry experience and perspectives by Klaasen, H.L.B.M., van der Veen, M., Molkenboer, M.J.C.H., Bruderer, U.

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Exploration of the potential utility of the luciferase immunoprecipitation system (LIPS) assay for the detection of anti-leptospira antibodies in dogs by Taylor, C., Belin, E., Brodbelt, D., Klaasen, H.L.B.M., Catchpole, B.

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A new tetravalent canine leptospirosis vaccine provides at least 12 months immunity against infection by Klaasen, H.L.B.M., van der Veen, M., Sutton, D., Molkenboer, M.J.C.H.

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Duration of immunity in dogs vaccinated against leptospirosis with a bivalent inactivated vaccine by Klaasen, H.L.B.M., Molkenboer, M.J.C.H., Vrijenhoek, M.P., Kaashoek, M.J.

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Comparison of the efficacy of a subunit and a live streptomycin-dependent porcine pleuropneumonia vaccine by Tumamao, J.Q, Bowles, R.E, Bosch, H. van den, Klaasen, H.L.B.M, Fenwick, B.W, Storie, G.J, Blackall, P.J

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Apathogenic, intestinal, segmented, filamentous bacteria stimulate the mucosal immune system of mice by KLAASEN, H. L. B. M, VAN DER HEIJDEN, P. J, STOK, W, POELMA, F. G. J, KOOPMAN, J. P, VAN DEN BRINK, M. E, BAKKER, M. H, ELING, W. M. C, BEYNEN, A. C

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Intestinal, segmented, filamentous bacteria by Klaasen, H.L.B.M., Koopman, J.P., Poelma, F.G.J., Beynen, A.C.

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evaluation of the role of antibodies to Actinobacillus pleuropneumoniae serovar 1 and 15 in the protection provided by sub-unit and live streptomycin-dependent pleuopneumonia vacci... by Tumamao, J.Q, Bowles, R.E, Bosch, H. van den, Klaasen, H.L.B.M, Fenwick, B.W, Blackall, P.J

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Intestinal, segmented, filamentous bacteria by Klaasen, H.L.B.M, Koopman, J.P, Poelma, F.G.J, Beynen, A.C

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Intestinal, segmented, filamentous bacteria by Klaasen, H.L.B.M., Koopman, J.P., Poelma, F.G.J., Beynen, A.C.

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Intestinal, segmented, filamentous bacteria and colonisation resistance of mice to parthogenic bacteria by Klaasen, H.L.B.M, Koopman, J.P, Poelma, M.E, Brink, M.E., van den, Bakker, M.H, Beynen, A.C

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