| 摘要 |
A nucleic acid construct comprising a chimeric promoter sequence and a cloning site for insertion of a coding sequence in operable linkage with the chimeric promoter, wherein the chimeric promoter sequence comprises: (a) a hCMV immediate early promoter sequence; (b) exon 1 and at least a part of exon 2 of the hCMV major immediate early gene; and (c) a heterologous'intron provided in place of the intron A region of the hCMV major immediate early gene. |
