One hundred and sixteen of 172 bone marrow (BM) or peripheral blood (PB) specimens were from follow-up 19 newly diagnosed APL patients and the rest 56 samples were from 47 patients treated 3 to 24 months later.

• 172份标本包括19例连续随访APL患者的116份骨髓或外周血标本和47例距初诊3个月至2年不等的非连续随访患者的56份骨髓标本,其中形态学完全缓解(CR)后117份,CR前55份标本。