डाउन सिंड्रोम क्या है?
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a congenital disorder arising from a chromosome defect, causing intellectual impairment and physical abnormalities including short stature and a broad facial profile. It arises from a defect involving chromosome 21, usually an extra copy (trisomy-21).
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डाउन सिंड्रोम एक आनुवांशिक विकार है, जो असामान्य कोशिका विभाजन के कारण गुणसूत्र 21 से अतिरिक्त आनुवंशिक सामग्री का परिणाम होता है।
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