Down Syndrome – Health Matters Down syndrome, or Down’s syndrome (primarily in the United Kingdom), trisomy 21, or trisomy G, is a chromosomal disorder caused by the presence of all or part of an extra
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Down Syndrome – Health Matters Down syndrome, or Down’s syndrome (primarily in the United Kingdom), trisomy 21, or trisomy G, is a chromosomal disorder caused by the presence of all or part of an extra