1. Cell type-specific over-expression of chromosome 21 genes in fibroblasts and fetal hearts with trisomy 21 Li, Chi-Ming; Guo, Meirong; Salas, Martha; Schupf, Nicole; Silverman, Wayne; Zigman, Warren; Husain, Sameera; Warburton, Dorothy P.; Thaker, Harshwardhan; Tycko, Benjamin 2006 Articles Gene expressionDown syndromeGeneticsCytology