The E.coli derived recombinant 52kDa protein is genetically engineered peptide which is derived from Dengue Type-2 and 4 to be expressed as a fused envelope, each part in this fusion contains 170 a.a (positions 46-217),it is used in ELISA assay. This fusion protein is connected to a 6xHis Tag. Dengue Type-2 and 4 is purified by proprietary chromatographic technique.The E.coli derived recombinant 52kDa protein is genetically engineered peptide which is derived from Dengue Type-2 and 4 to be expressed as a fused envelope, each part in this fusion contains 170 a.a (positions 46-217),it is used in ELISA assay. This fusion protein is connected to a 6xHis Tag. Dengue Type-2 and 4 is purified by proprietary chromatographic technique.; The protein solution contains Phosphate buffered saline, pH-7.4. Dengue Envelope-2; 4 Recombinant although stable at 4°C for 1 week, should be stored below -18°C. Please prevent freeze thaw cycles.