Protein Engineering Research Institute
Protein Express Co., Ltd.
Protemix Corporation Limited
Proteobioactives Pty Ltd.
Proteolix, Inc.
Proteologies, Ltd.
ProteoSys AG
Proteotech Inc.
Proter S.p.A.
Proter Spa
Proterra AG
Protevin Bernard
Protherics Molecular Design Limited
Protia, LLC
Protor Co.
ProTor Pharma Corporation
Protra, LLC
Proud Christopher Gregory
Proud David
Proudfoot John R.