Different regulation of plasminogen activator inhibitor 2 gene expression by phorbol ester and cAMP in human myeloid leukemia cell line PL-21 - Niiya, K; Taniguchi, T; Shinbo, M; Ishikawa, T; Tazawa, S; Hayakawa, Y; Sakuragawa, N (Thromb Haemost, 1994)