A DNA motif related to the cAMP-responsive element and an exon-located activator protein-2 binding site in the human tissue-type plasminogen activator gene promoter cooperate in basal expression and convey activation by phorbol ester and cAMP - Medcalf, R L; Rüegg, M; Schleuning, W-D (J Biol Chem, 1990)