organism: Gallus gallus
attributes.tag: breed
attributes.value: White leghorn
attributes.tag: dev_stage
attributes.value: E20
attributes.tag: sex
attributes.value: not collected
attributes.tag: tissue
attributes.value: brain
attributes.tag: biomaterial_provider
attributes.value: Clifton W. Ragsdale, University of Chicago
attributes.tag: collected_by
attributes.value: Joanna Rowell
attributes.tag: collection_date
attributes.value: 2013-01
attributes.tag: BioSampleModel
attributes.value: Model organism or animal