Subject
Humans; Time Factors; Drug Synergism; Microscopy; Antineoplastic Combined Chemotherapy Protocols/*pharmacology; Ascorbic Acid/administration & dosage/pharmacology; Carcinoma/*drug therapy/ultrastructure; Cell Death/*drug effects; Urinary Bladder Neoplasms/*drug therapy/ultrastructure; Vitamin K 1/administration & dosage/pharmacology; Electron; Electron/methods; Cultured/drug effects; Tumor Cells; Scanning/methods