早孕阶段测知胎儿性别,对更好的开展计划生育工作很有意义。多年来,不少科学工作者在这方面作了大量的研究工作。但至目前为止,利用简便的方法准确地测出胎儿性别问题,还没真正解决。1949年,Barr氏发现雌猫和厷猫核仁卫星不一样。以后又有许多学者,发现男女两性的细胞核核膜上染色质块多少不同。我国陈氏也对此曾进 The detection of fetal sex in early pregnancy is of great significance for better family planning work. Over the years, many scientists have done a great deal of research in this area. But so far, the use of simple methods to accurately measure fetal gender issues, have not really solved. In 1949, Barr’s found that female and male cats were not the same. Since then, many scholars have found that the number of chromatin blocks in the nucleolar nuclear membranes of both sexes varies. Chen of our country has entered this