Image:Chromosome 21.gif
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The human chromosome 21 is affected in Down syndrome.
Source: National Institute of Child Health and Human Development
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This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
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| Date/Time | Dimensions | User | Comment | |
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| current | 12:36, 9 August 2005 | 90×171 (3 KB) | Lipothymia | (Category:Medicine {{pd}}) |
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