Serratia marcescens extract (polyribosomes) April 12, 2017 Serratia marcescens extract (polyribosomes) Trade Name Imuvert Orphan Indication Primary brain malignancies USA Market Approval USA USA Designation Date 1988-09-07 00:00:00 Sponsor Cell Technology, Inc.;1668 Valtec Lane;Boulder, Colorado, 80306