PRIOR CONCURRENT THERAPY: Biologic therapy: No prior immunotherapy within 4 weeks of study No concurrent immunotherapy Chemotherapy: No more than 1 prior chemotherapy regimen or chemotherapy/radiation therapy given in a neoadjuvant or adjuvant setting No prior chemotherapy within 4 weeks of study No concurrent chemotherapy Endocrine therapy: No prior hormonal therapy within 4 weeks of study Concurrent megestrol (Megace) allowed No other concurrent hormonal therapy Radiotherapy: No prior radiotherapy within 4 weeks of study No prior radiation to greater than 30% of bone marrow No more than 1 prior chemotherapy/radiation therapy regimen given in a neoadjuvant or adjuvant setting No concurrent radiotherapy Surgery: No prior surgery within 2 weeks of study Other: No prior parenteral antibiotics within 1 week of study