Antimitotic AgentsColchicineTubulin ModulatorsTubulinGriseofulvinVinca AlkaloidsMitosisVinblastineMicrotubulesAntineoplastic AgentsPaclitaxelCell Line, TumorStructure-Activity RelationshipApoptosisProto-Oncogene Proteins c-bcl-2Apoptosis Regulatory ProteinsCaspasesCaspase 3Inhibitor of Apoptosis ProteinsDepsipeptidesMaytansineTumor Cells, CulturedCell Survival