Antigen | Human VEGF121 was produced in E. Coli and purified to >98% by SDS-PAGE and HPLC. Endotoxin level is <0.1 ng/ug (<1 EU/ug) protein. It has been sterile filtered and lyophilized with no preservatives. The lyophilized protein is stable at room temperature but it is recommend to store desiccated at -20oC. |