英语语法分析

The number of haemopoietic stem cells(HSCs) limited their clinical application.

造血干细胞数量限制了其临床应用。

Haemopoietic stem cells can be collected from a donor either as a bone marrow harvest or by peripheral blood collection.

异体造血干细胞移植骨髓和周边血干细胞收集之比较造血干细胞可收集自捐者的骨髓或是周边血。

BACKGROUND: Successful homing of haemopoietic stem cells is the key step for the success of haploidentical bone marrow transplantation.

背景：移植后造血干细胞的顺利归巢是单倍相合骨髓移植成功的关键。