Abstract
1 Protein Engineering, Centocor R&D Inc., 145 King of Prussia Road, Radnor, PA 19087, USA
2 Immunobiology, Centocor R&D Inc., 145 King of Prussia Road, Radnor, PA 19087, USA
3 Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, 28220 Madrid, Spain
4 Institute for Animal Health, Compton, Newbury, Berkshire RG20 7NN, UK
5 Molecular Discovery Technologies, Centocor R&D Inc., 145 King of Prussia Road, Radnor, PA 19087, USA