Gharib R, Sharif H, Azadeh B, Mahallati E
Pahlavi Med J. 1977 Apr;8(2):190-7.
The incidence of sex-chromatin-positive cells during the first five days of life was investigated in buccal smears stained with aceto-orcein in three groups of newborn females: 51 term infants, 17 small-for-date prematures and 9 prematures with birth weight appropriate for gestational age. In addition, single buccal smears were obtained from a control group of 50 older female children. No significant difference was found in the number of sex-chromatin positive cells between the three groups of infants. The mean incidence of sex-chromatin-positive cells in the neonatal period was lower than that of the older control girls, as has been reported by previous workers. The mean incidence of sex-chromatin-positive cells on the fifth postnatal day never reached 17% which was the mean frequency of sex-chromatin positive cells in older controls. This contrasts with the findings of other workers who reported the rise of sex-chromatin positive cells to occur on the second or third days of life.
对三组新生女婴的口腔涂片进行了研究，这些涂片用醋酸地衣红染色，以调查出生后前五天性染色质阳性细胞的发生率。这三组分别是：51名足月儿、17名小于胎龄早产儿和9名出生体重与孕周相符的早产儿。此外，还从50名年龄较大的女童对照组中获取了单次口腔涂片。三组婴儿中性染色质阳性细胞的数量未发现显著差异。如先前研究者所报道，新生儿期性染色质阳性细胞的平均发生率低于年龄较大的对照女孩。出生后第五天性染色质阳性细胞的平均发生率从未达到17%，而这是年龄较大对照组中性染色质阳性细胞的平均频率。这与其他研究者的发现形成对比，他们报告性染色质阳性细胞的增加发生在出生后第二天或第三天。
