Objective:To construct eukaryotic expressing vector for fusion gene of Der f1 which is a main allergen of dermatophagoides farinae,and provide evidence for further transfection of fusion protein expressed in eukaryotic cells.Methods:The primers were designed according to nucleic acid sequences of Der f1(AB034946) from the Genebank,and Der f 1 gene from the preservative plasmid pM19-T was amplified by PCR.Then the gene was connected with murine IL-12(m IL-12) as a fusion gene mIL-12/Der f1,and cloned into th...