The DNA sequence and gene catalog for human chromosome 21.
Chromosome 21 Mapping and Sequencing Consortium
Published in Nature 405, 311-19 (18 May 2000)
DNA sequence and comparative analysis of chimpanzee chromosome 22.
The International Chimpanzee Chromosome 22 Consortium
Published in Nature 429, 382-388 (27 May 2004)
A gene expression map of human chromosome 21 orthologues in the mouse.
The HSA21 expression map initiative
Published in Nature 420, 586-590 (5 December 2002)