Sartorius Stedim Biotech has entered into an agreement with WuXi AppTec, Inc., a subsidiary of WuXi PharmaTech, to work on viral clearance studies. Under this agreement, WuXi AppTec will provide the relevant viruses, materials and methodologies to Sartorius Stedim Biotech to employ in conducting non-GLP viral clearance testing of its technologies with customer products and for supporting its own R&D activities.      Sartorius Stedim Biotech markets an orthogonal and integrated three-step ...