论文部分内容阅读
流产是指胚胎或胎儿在28周以前终止妊娠并离开母体。根据流产发生的妊娠月份不同,可以分为早期流产和晚期流产。如果流产发生在妊娠12周以前,称为早期流产;发生在妊娠12～27周,称为晚期流产。人类大约有1/5的妊娠是以流产告终。很早期的流产可能被当作一次延期的月经而被忽略。50%～60%的早期流产是由于胚胎的染色体异常造成的。这种失败的妊娠犹如大浪淘沙,是大自然对人种的保护。淘汰一个有缺陷的胚胎,在未来的日子里再孕育一个健康的胚胎,岂不是更美满的事吗?因
Abortion refers to the embryo or fetus terminating pregnancy before 28 weeks and leaving the mother. According to different abortion months of pregnancy can be divided into early abortion and late abortion. If the abortion occurred in 12 weeks before pregnancy, known as early abortion; occurred in 12 to 27 weeks of pregnancy, known as late abortion. About one-fifth of human pregnancies end in abortion. Very early abortion may be ignored as a deferred menstrual cycle. Fifty to 60% of early abortions result from chromosomal abnormalities in the embryo. This failed pregnancy is just like the ebb and flow of the waves, which is the nature’s protection of race. Is it not a better idea to phase out a defective embryo and bred a healthy embryo in the future?