Trisomy 21 with borderline mental retardation.
D004314:Down Syndrome / Q000175:diagnosis*; D004777:Environment; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis*; D007361:Intelligence Tests; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D009030:Mosaicism; D011581:Psychological Tests; D014314:Trisomy