Definition: In this task, you're given a paragraph from the research paper and your task is to generate a suitable title for the research paper based on the given paper. Under 100 words is a good title length.
Input: Recently, it was shown that aminopeptidase N (E.C. 3.4.11.2, CD13) is up-regulated during mitogenic stimulation of peripheral T-cells. In this study, we demonstrate that the half-life of APN mRNA was considerably prolonged in these cells leading to a 2.7-fold increase of APN transcript level. The apparent halflife time of the APN transcript was investigated by the RNA synthesis inhibitor-chase method using actinomycin D. The steady-state APN mRNA levels was determined by a competitive promoter activity as well. These studies suggest a control of APN gene expression at the post-transcriptional level in addition to promoter-mediated regulation. © 1997 Federation of European Biochemical Societies.

The activation-dependent induction of APN-(CD13) in T-cells is controlled at different levels of gene expression