| 摘要 |
<p>A vector having the following elements: (1) a promoter which functions in a host to be used, (2) a regulatory region for regulating the function of the promoter (1), and (3) a region coding for a 5'-untranslated region derived from cold shock protein gene mRNA, or a region coding for a region formed by subjecting the untranslated region to substitution, deletion, insertion, or addition of at least one base.</p> |
