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Down Syndrome

  • By: Justin Corfield
  • In: Encyclopedia of Global Health
  • Edited by: Yawei Zhang
  • Subject:Public Health (general), Public Health Education & Health Promotion

Down syndrome, also called Down's syndrome or trisomy 21, is a congenital disorder caused by the presence of all or part of an extra 21st chromosome. This gives people with Down syndrome 47 chromosomes, rather than 46. It acquired the name ...

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