attributes.tag: source_name
attributes.value: embryonic stem (ES) cells
attributes.tag: genetic background
attributes.value: hybrid 129-C57BL/6
attributes.tag: genotype
attributes.value: N-terminal 200 amino acid deletion of Nrde2, 3A-tagged Nrde2
attributes.tag: antibody
attributes.value: anti FLAG (Sigma F1804), M280 Streptavidin Dynabeads (ThermoFisher 11206D)