Cloning and expression of human tissue-type plasminogen activator cDNA in E. coli - Pennica, D; Holmes, W; Kohr, W; Harkins, R; Vehar, G; Ward, C; Bennet, W; Ylverton, E; Seeburg, P; Heyneker, H; Goeddel, D; Collen, D (Nature, 1983)