title: GSM4724309: B4; Canis lupus familiaris; ATAC-seq
library_construction_protocol: Genomic DNA was isolated from cellular nuclei. Genomic DNA was immediately resuspended in transposase reaction mix using the Nextera DNA Library Prep Kit (Illumina, San Diego, CA) followed by purification with the Qiagen Minlute Kit. Tagmented DNA was amplified  and index using the Nextera Index Kit (Illumina) followed by an additional purification step with the Qiagen MinElute Kit as described elsewhere.