TY - JOUR KW - Atlases as Topic KW - Chromatin KW - Fetus KW - Gene Expression Profiling KW - Gene Expression Regulation, Developmental KW - Humans KW - Neurons KW - Single-Cell Analysis KW - Transcription Factors AU - Junyue Cao AU - Diana R. O'Day AU - Hannah A. Pliner AU - Paul D. Kingsley AU - Mei Deng AU - Riza M. Daza AU - Michael A. Zager AU - Kimberly A. Aldinger AU - Ronnie Blecher-Gonen AU - Fan Zhang AU - Malte Spielmann AU - James Palis AU - Dan Doherty AU - Frank J. Steemers AU - Ian A. Glass AU - Cole Trapnell AU - Jay Shendure AB - The gene expression program underlying the specification of human cell types is of fundamental interest. We generated human cell atlases of gene expression and chromatin accessibility in fetal tissues. For gene expression, we applied three-level combinatorial indexing to >110 samples representing 15 organs, ultimately profiling ~4 million single cells. We leveraged the literature and other atlases to identify and annotate hundreds of cell types and subtypes, both within and across tissues. Our analyses focused on organ-specific specializations of broadly distributed cell types (such as blood, endothelial, and epithelial), sites of fetal erythropoiesis (which notably included the adrenal gland), and integration with mouse developmental atlases (such as conserved specification of blood cells). These data represent a rich resource for the exploration of in vivo human gene expression in diverse tissues and cell types. BT - Science (New York, N.Y.) DA - 2020-11-13 DO - 10.1126/science.aba7721 IS - 6518 LA - eng N2 - The gene expression program underlying the specification of human cell types is of fundamental interest. We generated human cell atlases of gene expression and chromatin accessibility in fetal tissues. For gene expression, we applied three-level combinatorial indexing to >110 samples representing 15 organs, ultimately profiling ~4 million single cells. We leveraged the literature and other atlases to identify and annotate hundreds of cell types and subtypes, both within and across tissues. Our analyses focused on organ-specific specializations of broadly distributed cell types (such as blood, endothelial, and epithelial), sites of fetal erythropoiesis (which notably included the adrenal gland), and integration with mouse developmental atlases (such as conserved specification of blood cells). These data represent a rich resource for the exploration of in vivo human gene expression in diverse tissues and cell types. PY - 2020 EP - eaba7721 T2 - Science (New York, N.Y.) TI - A human cell atlas of fetal gene expression VL - 370 SN - 1095-9203 ER -