Duocarmycin derivative from Kyowa Hakko has potent antitumor activity, reduced toxicity Aug. 12, 1999
Phase II oral mucositis results promising; nonetheless, P&U withdraws from IB-367 collaboration Aug. 11, 1999
Cytarabine analogue P-4055 has significantly higher antitumor potency; clinical trials recommended Aug. 11, 1999