title: GSM5111180: Con DE Rep1; Homo sapiens; ATAC-seq
library_construction_protocol: Single cells were harvested at definitve endoderm (DE), gut tube  (GT), pancreatic endoderm (PE) and pancreatic progenitor (PP) stage. Cells were directly lysed in tagmentation buffer (Nextera DNA Library Preparation Kit, Illumina) followed by DNA extraction. Nextera DNA Library Preparation Kit, Illumina