Conversely , attempts to prolong pregnancy with expectant management may result in fetal death or asphyxial damage in utero and increased maternal morbidity 相反的，采用保守治疗来延长妊娠时间可能导致胎儿的死亡，宫内窒息并增加母体发病率。
Conersely , attempts to prolong pregnancy with expectant management may result in fetal death or asphyxial damage in utero and increased maternal morbidity 急诊分娩会导致新生儿高死亡率和患病率，并且因早产会延长新生儿在重症监护病房的住院时间。
Treatment in utero and immediately following delivery is focused on restoring neonatal platelets to a safe level and preventing life - threatening bleeding 在母体内和分娩后立即进行的治疗着重于令新生儿的血小板恢复到安全的水平，并防止危及生命的出血的发生。
Sh chou 、 t kno 、 m lin 、 ok lee ， " in utero transplantation of human bone marrow - derived multipotent mesenchymal stem cells in mice . " ， journal of orthopaedic research ， vol . 24 ， no . 3 ， march 2006 ， pp . 301 - 312 方晴、周秀慧、柳如宗、林震煌，毛细管电泳/线上扫集浓缩技术对老鼠血液中麦角乙二胺的分析与研究，第63卷，第1期， 2005年3月，页77 - 86 。
Despite improvements in antenatal and intrapartum care , stillbirth , defined as in utero fetal death at 20 weeks of gestation or greater , remains an important , largely unstudied , and poignant problem in obstetrics 虽然对产前和产时的照顾已改进，死胎（被定义为妊娠达到或超过20周后胎儿子宫内死亡）仍然是一项重要的、很多不清楚的令人悲痛的产科学问题。
In contrast to murine studies , studies of human hscs have relied on a number of in vitro assays that identify cells with the capacity to generate hematopoietic progenitors in long - term culture and to differentiation into multiple hematopoietic lineages . recently , two elegant animal models that enable the in vivo measurement of human hscs marrow repopulating potential have been developed . one is the sheep in utero transplantation system in which human hematopoietic progenitor cells are transferred into the sheep fetus in utero before the development of the ovine immune system 早在80年代中期， zanjani等就利用胚胎期免疫系统发育不完善，将人的造血干细胞移植到妊娠中期胚羊腹腔内，成功地建立了人胎羊造血干细胞嵌合体移植模型，并以此实验模型作为体内检测人造血干细胞和人骨髓间充质干细胞多向分化潜能的方法。
