title: GSM4002810: Control4; Homo sapiens; RNA-Seq
library_construction_protocol: For samples 1-3: Tissue was mechanically dissociated, treated with 0.25% trypsin and 25ug/mL Dnase for 30 min at 37C, and then passed through a 140um nylon mesh. The resulting cells were then separated on 30% percoll gradient to remove myelin and erythrocytes. For samples 4-5: A cell suspension was generated by papain digestion, neutralization, and 70um filtration of cell extract. Cells were centrifuged, resuspended in 30% Percoll, centrifuged, washed in PBS, and cell density was quantified. Cells were suspended in PBS and 16% Opti-prep. For samples 1-3: Libraries were created according to the 10X Genomics protocol (Zheng et al. Nature Communications 2017). For samples 4-5: Libraries were created according to the Drop-seq protocol in Macosko et al. Cell 2015. Following reverse transcription, exonuclease I treatment, and PCR, cDNA libraries were quantified and 600 pg of cDNA was tagmented using Nextera XT library prep kit.
attributes.tag: GEO Accession
attributes.value: GSM4002810