The proliferative potential index(PPI) of bone marrow cells was detected by premature chromosome condensation(PCC) methods in 17 patients with chronic myelogenous leukemia(CML) and 8 healthy subjects.

• 以期前凝集染色体（PCC）技术测定17例慢性粒细胞白血病（CML）和8例正常对照者骨髓细胞增殖潜能指数（PPI）。