21号染色体的英文缩写为Chromosome 21。
双语例句
1、用FISH技术研究人类体外未受精卵的21号染色体非整倍体
FISH Study of Human Oocytes Failed to Fertilize in vitro Characterised with Chromosome 21 Aneuploidy
2、方法应用21号染色体特异的α-卫星DNA序列引物对7份早孕绒毛间期细胞标本进行了引物原位标记反应。
Methods The primed in situ labeling ( PRINS) reactions were performed with chromosome 21 specific oligonucleotide primer.
