French investigators continue research on homocamptothecins; dual Topo I and II inhibitor identified Sep. 27, 1999
Phase I results of Bay-12-9566 presented at ECCO 10; Bayer halts all trials on the compound Sep. 27, 1999
Novel karenitecin from BioNumerik inhibits Topo I and is synergistic with a TS inhibitor Sep. 24, 1999