attributes.tag: source_name
attributes.value: Pancreas
attributes.tag: tissue
attributes.value: Pancreas
attributes.tag: cell type
attributes.value: acinar_cell, immune_cell, activated_pancreatic_stellate_cell, beta_cell, ductal_cell, endocrine_like_cell, endothelial_cell, delta_cell
attributes.tag: geo_loc_name
attributes.value: missing
attributes.tag: collection_date
attributes.value: missing