Down's syndrome with 45 chromosomes.
D002869:Chromosome Aberrations; D002901:Chromosomes, Human, 13-15; D002904:Chromosomes, Human, 21-22 and Y; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D007231:Infant, Newborn; D014178:Translocation, Genetic