What is down syndrome?

A Woman With Down Syndrome Has Fought For Organ Transplant Anti-Discrimination Legislation For Years; Now, It's Been Proposed, And Named After Her.

Quick Facts: Down Syndrome (Trisomy 21) - Merck Manuals Consumer Version

Down syndrome - Wikipedia

Data and Statistics on Down Syndrome

Uncovering Racial Disparities in Down Syndrome – Pediatrics Nationwide

Understanding Down Syndrome: Causes, Diagnosis, and Treatment

Aging with Down syndrome: 'Here I Am' campaign aims to dispel misconception of shorter life expectancies

What is down syndrome? – T21RS

What is Down's syndrome? - BBC Newsround

7 Life Lessons From Raising a Child With Down Syndrome