organism: Mus musculus
attributes.tag: source_name
attributes.value: Double-negative developing thymocytes gated for CD4-, CD8-, CD3-, B220-, CD25int, CD44low and CD117low expression
attributes.tag: population
attributes.value: DN3-4
attributes.tag: strain
attributes.value: C57BL/6
attributes.tag: genotype/variation
attributes.value: wild type
attributes.tag: age
attributes.value: 5-7 weeks
attributes.tag: Sex
attributes.value: male