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John Langdon Down
John Langdon Down (1828 – 1896) was a British physician who first described the syndrome named after him in 1866. Historically called "Down syndrome" the current terminology is trisomy 21.
This is the most common human aneuploidy where an extra copy of chromosome 21 is found in the cell genome.
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| current | 10:45, 4 September 2011 | | 282 × 400 (12 KB) | S8600021 (talk | contribs) | ==John Langdon Down== John Langdon Down ( 1828 – 1896) was a British physician who first described the syndrome in 1866 named after him, '''Down syndrome''' now called trisomy 21. The most common human aneuploidy where an extra copy of |
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