Leukemia, Antineoplastic Agents - pharmacology, Cell Proliferation - drug effects, Dipyridamole - pharmacology, Adenosine - antagonists & inhibitors, Phosphodiesterase Inhibitors - pharmacology, Antineoplastic Agents - antagonists & inhibitors, Adenosine - pharmacology, Biological Transport - drug effects, T-Cell - pathology, Antineoplastic Agents - metaboli...