trisomy 21
英漢例句
- Around 30% of these cases are associated with trisomy 21.
大約30%25這些病例同時合并又21三染色體。 - Cases of trisomy 21 were identified from the cytogenetics laboratory logbook.
Down綜合征（21三體綜合癥）的鑒別參照細胞遺傳學手冊。 - Amniocentesis was performed to rule out trisomy 21;the karyotype was normal: 46,XX.
羊水穿刺排除了21三體，染色體組型正常，46，XX。 - A short femur is associated with trisomy 21 rather than trisomy 13 and holoprosencephaly.
股骨短與21-三體而不是13-三體或全前腦畸形有關。 - Down syndrome (trisomy 21) is a disorder caused by the presence of an extra 21st chromosome.
唐氏綜合癥（三染色體21）是由于存在額外的第21號染色體而產生的一種疾病。