placental

1.The major indicatio of subtotal hysterectomy were postpartum hemorrhage, uterine inertia and placental related factors.

产后出血、宫缩乏力和胎盘因素是子宫次全切术的主要手术指征。

2.Human chorionic gonadotropic (hCG) and human placental latogen (hPL) are peptide hormones produced and excreted by placental trophoblastic cells during pregnancy.

人绒毛膜促性腺激素、人胎盘生乳素是胎盘滋养细胞合成和分泌的肽类激素。

3.Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.

目的本研究采多普勒检测孕妇子宫胎盘床螺旋动脉搏动指数（PI），阻力指数（RI），预测妊高征的发生、发展及预后。

4.MeHg can easily pass through the placental barrier, accumulate in the fetus and change the behavior and perceptibility of the second generation related to the function of central nervous system.

它极易通过胎盘屏障进入胎儿体内,影响子代的生长发育,改变子代与中枢神经系统功能有关的行为和认知能力。