Page Appendix 30 …………………………………………………………………………….... 242 L. Jacobs, G. Chénard, T. Jelsma, and K. de Clercq Modification and further validation by different laboratories of a FMDV type O Specific ELISA for detection of antibodies in all susceptible species Appendix 31 ………………………………………………………………………………. 248 Bernd Haas and Karl J. Sorensen Comparison of ELISAs for the differentiation of infection from vaccination by detection of antibodies to the non-structural protein 3ABC of foot-and-mouth disease virus Appendix 32 ……………………………………………………………………………… 257 R.M. Armstrong, Z. Zhang, N Aggarwal, P.A. Hamblin and S.J. Cox Detection of IgG against the foot-and-mouth disease Virus (FMDV) non-structural polyprotein 3ABC in cattle and sheep Appendix 33 ………………………………………………………………………………. 272 B.M. deC. Bronsvoort, J. Anderson, V.N. Tanya, R.P. Kitching, and K.L. Morgan Evaluation of the 3AB CHEKITTM for an African cattle population with endemic foot-and-mouth disease Appendix 34 ………………………………………………………………………………. 283 L. Schalch, D.E. Rebeski, H. Samaras, G. Lozano, B. Thuer, C. Schelp Recently generated data with the CHEKIT-FMD-3ABC ELISA kit and methods to monitor the operational performance of a 3ABC ELISA Appendix 35 ………………………………………………………………………………. 303 Scott Liu, Tseng Yuan Chang, Alan M. Walfield, Mei Lun Zhang, Kenneth K. Sokoll, Shih Ping Chen, Ming Chang Li, Yeou Liang Lin, Ming Hwa Jong, David Yang, Nancy Chyr, and Chang Yi Wang Synthetic Peptide-based serosurveillance and vaccine system for FMD Appendix 36 ………………………………………………………………………………. 321 Kris De Clercq and David K.J. Mackay Regulations of FMD vaccines within the European Union Appendix 37 ………………………………………………………………………………. 327 Lukas Bruckner and Christian Griot FMD vaccines: Potency testing in the target species Appendix 38 ………………………………………………………………………………. 328 Gülhan Aynagöz, A. Naci Bulut, and Aydin Coþkuner Potency control of FMD vaccine in the field during 2001-2002 Appendix 39 ………………………………………………………………………………. 331 Fuat Özyörük, Ünal Parlak, Gülhan Aynagöz, and Hidayet Bozoğlu Monoclonal antibody based detection of 3A containing non-structural proteins In A1(OH)3 adjuvanted foot-and-mouth disease vaccines vi