© 2005 Nature Publishing Group http://www.nature.com/naturemethods
                                                                                                                    SUPPLIERS GUIDE: COMPANIES OFFERING PROTEIN PURIFICATION PRODUCTS
                                                                   Company                                                       Web Address
                                                                   Agarose Bead Technologies                                                                                                                                                                                                                                                       www.abtbeads.com
                                                                   Agilent                                                                                                                                                                                         www.agilent.com
                                                                   Amersham Biosciences (now part of GE Healthcare)                                                                                                                                                                                                                                                                                                                       www.amershambiosciences.com
                                                                   Applied Biosystems                                                                                                                                                                                             www.appliedbiosystems.com
                                                                   Beckman Coulter                                                                                   www.beckman.com
                                                                   BD Biosciences Clontech                                                                                          www.bd.com
                                                                   Biochrom Labs Inc.                                                                                                                                                                                                                                                                              www.biochrom.com
                                                                   Bio-Rad                                                                                                                    www.bio-rad.com
                                                                   BioScience Beads                                                         www.bioscience-beads.com
                                                                   Brinkmann                                                                                                                                                                                                                               www.brinkmann.com
                                                                   Calbiochem                                                                                                                                                                                                                                               www.calbiochem.com
                                                                   Caliper Life Sciences                                                                                                                                                                                                                                                                                           www.caliperls.com
                                                                   Center for Integrated Biosystems                                                                                                                                                                                                                                                                                                           www.biosystems.usu.edu
                                                                   Chemicon                                                                                                                                  www.chemicon.com
                                                                   Ciphergen                                                                                                                                                 www.ciphergen.com
                                                                   Dynal Biotech                                                                                                                                                              www.dynalbiotech.com
                                                                   EMD Biosciences                                                                                                                                                                                                                                          www.emdbiosciences.com
                                                                   Eppendorf                                                                                                                                                                                                                                                www.eppendorf.com
                                                                   Fluidigm                                                                                                                                                                                                                                                 www.fluidigm.com
                                                                   GenScript                                                                                                                                                                  www.genscript.com
                                                                   Gyros                                                                                                                                                                      www.gyros.com
                                                                   Invitrogen                                                                                                                                                                                                                                               www.invitrogen.com
                                                                   J.T. Baker                                                                                                                                                                 www.jtbaker.com
                                                                   MDS Inc.                                                                                                                                                                   www.mdsintl.com
                                                                   Millipore                                                                                                                                                                                                                                                www.millipore.com
                                                                   Molecular Probes                                                                                                                                                                                                                                                                                                www.probes.com
                                                                   NCI/SAIC Protein Purification Group                                                                                                                                                                                                                                                                                                        www.ncifcrf.gov/rtp/PEL/PP/
                                                                   New England BioLabs                                                                                                                                                                                                                                                                                             www.neb.com
                                                                   Novagen                                                                                                                                                                    www.novagen.com
                                                                   Paragon Bioservices                                                                                                                                                                                                                                                                                             www.paragonbioservices.com
                                                                   PhyNexus                                                                                                                                                                   www.phynexus.com
                                                                   Pierce Biotechnology                                                                                                                                                                                                                                                                                            www.piercenet.com
                                                                   Polysciences, Inc.                                                                                                                                                                                                                                                                                              www.polysciences.com
                                                                   Protana                                                                                                                                                                                                                                                  www.protana.com
                                                                   QBIOgene                                                                                                                                                                   www.qbiogene.com
                                                                   QIAGEN                                                                                                                                                                                                                                                   www.qiagen.com
                                                                   SEPIAtec                                                                                                                                                                                                                                                 www.sepiatec.com
                                                                   Sigma-Aldrich                                                                                                                                                                                                                                                                                                   www.sigmaaldrich.com
                                                                   Stratagene                                                                                                                                                                 www.stratagene.com
                                                                   SuNyx                                            www.sunyx.de
                                                                   Tecan                                                                                                                                                                      www.tecan.com
                                                                   Tosoh Biosep                                                                                                                                                                                                                                             www.tosohbiosep.com
                                                                   Trenzyme                                                                                                                                                                   www.trenzyme.com
                                                                   Vivascience                                                                                                                                                                www.vivascience.com
                                                                   Whatman                                                                                                                                                                    www.whatman.com