organism: Mus musculus
attributes.tag: source_name
attributes.value: Primary mammary epithelial cells
attributes.tag: background strain
attributes.value: 129X1/SvJ, C57BL/6, and Swiss Webster
attributes.tag: age
attributes.value: Nine weeks
attributes.tag: Sex
attributes.value: female
attributes.tag: developmental stage
attributes.value: Adult
attributes.tag: genotype/variation
attributes.value: mT-mG/SmoM2;MMTV-Cre (SmoM2 positive)
attributes.tag: cell type
attributes.value: MEC