PRIOR CONCURRENT THERAPY: Biologic therapy: At least 1 week since prior growth factors (epoetin alfa, filgrastim, sargramostim, interleukin-3, interleukin-11) and recovered No prior allogeneic bone marrow transplantation No concurrent immunotherapy Chemotherapy: See Disease Characteristics At least 3 weeks since prior chemotherapy and recovered No other concurrent chemotherapy Endocrine therapy: At least 3 weeks since prior endocrine therapy and recovered Radiotherapy: At least 3 weeks since prior radiotherapy and recovered No prior extensive radiotherapy to greater than 25% bone marrow No concurrent radiotherapy Surgery: Not specified