了解何时发生白血病 ,进展到何种程度 ,对于解释白血病病态、提高疗效是重要的。近年来 ,英国的Greaves采用分子生物学技术明确了单卵性双胎中的一个发生的白血病细胞在胎内可移向另一个胎儿 ,及婴儿白血病在胎内发生。另外 ,有报告称年长儿的 T细胞型造血器官肿瘤也有同样的情 Understanding when leukemia occurs and to what extent is important to explain the pathology of leukemia and improve the outcome. In recent years, Britain’s Greaves uses molecular biology techniques to clarify that leukemia cells that occur in one of the monozygotic twins can migrate to another fetus in the fetus, and infant leukemia occurs in the fetus. In addition, there are reports of older children with T-cell hematopoietic tumors have the same situation