TOPICS: Etoposide, teniposide, topoisomerase II, dsdna breaks, cell cycle arrest, g2 phase, s phase, testicular cancer, small cell lung cancer, lymphoma, leukemia, myelosuppression, alopecia, irinotecan, topotecan, topoisomerase I, ssdna breaks, cell cycle arrest, colon cancer, ovarian cancer, small cell lung cancer, myelosuppression, diarrhea