释义 |
DictionarySeeDown syndromeSee Down syndrome See Down syndromeDown, John Langdon H.
Down, John Langdon H., English physician, 1828-1896. Down syndrome - a chromosomal dysgenesis syndrome consisting of a variable constellation of abnormalities, caused by triplication or translocation of chromosome 21. Synonym(s): Langdon Down syndrome; trisomy 21 syndromeLangdon Down syndrome - Synonym(s): Down syndrome |