近来,各种显带技术的出现,促进了临床细胞遗传学和实验细胞遗传学的发展。这些技术的应用,使人们加深了对染色体重排特征的认识,在婴幼儿的染色体异常方面,有的研究已提供了资料。本文是描述在临床上疑有染色体异常的人群中,较严重的染色体异常的发生率。鉴于在这类人群中,其染 Recently, the advent of various banding techniques has contributed to the development of clinical cytogenetics and experimental cytogenetics. The application of these technologies has deepened the understanding of the characteristics of chromosomal rearrangements. Some studies have provided information on the chromosomal abnormalities in infants and young children. This article describes the incidence of more severe chromosomal abnormalities among people with clinically suspected chromosomal abnormalities. In view of such people, its dyed