***This page is no longer active*** Maxygen Inc. was a biopharmaceutical company focused on developing improved versions of protein drugs through internal development and external collaborations and other arrangements. They used the MolecularBreeding™ directed evolution technology platform, along with ancillary technologies, and extensive protein modification expertise to pursue the creation of biosuperior proteins. Maxygen Inc. was dissolved in 2013. Visit the active Maxygen page at linkedin.com/company/maxygenllc