目的：优选出羊胎免疫调节因子提取的最佳工艺。
To study the optimum extraction process for goat embryo immunoregulatory factor(GEIF), the lymphocyte transformation was investiqated.
方法用双胎母绵羊，每胎其中一只胎羊在母羊妊娠中期切除甲状腺。
Method During mid pregnancy of the female sheep with twins, one fetus of the twins was thyroidectomized.
目的研究在不同胎盘缺血情况下胎羊脐带动静脉血流信号的变化。
Objective To study the cord artery and vein blood flow change during different placenta ischemic states.
对北川白山羊母羊的繁殖特性的研究表明，在年产胎数和多胞胎两方面，与成都麻羊存在极为显著的差异。
In other ways of the she-goat reproductive characteristics, there are also much differences between Beichuan white goat and Chengdu grey goat or Jianchang black goat.
利用胎羊体外循环模型观察胎盘功能及胎心功能变化，研究胎羊体外循环建立方法和存在问题。
To study the placental and fetal heart function, cardiopulmonary bypass was established in fetal lambs and the different methods of cannulation were applied.
利用胎羊体外循环模型观察胎盘功能及胎心功能变化，研究胎羊体外循环建立方法和存在问题。
To study the placental and fetal heart function, cardiopulmonary bypass was established in fetal lambs and the different methods of cannulation were applied.
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