organism: Mus musculus
attributes.tag: strain
attributes.value: BALB/c
attributes.tag: age
attributes.value: 12 weeks
attributes.tag: dev_stage
attributes.value: Adult
attributes.tag: collection_date
attributes.value: 2025-05
attributes.tag: geo_loc_name
attributes.value: USA
attributes.tag: sex
attributes.value: female
attributes.tag: tissue
attributes.value: Mammary tumor
attributes.tag: sample_type
attributes.value: Paired tumor and tumor-draining lymph node
attributes.tag: BioSampleModel
attributes.value: Model organism or animal