Table 1.

Tissue samples

Tissue type	Abbreviation	Number of samples	Age (weeks)	Array size
Normal virgin mammary gland	VMG or V	5	9	15k
Hyperplastic mammary glands from MMTV-Wnt-1 transgenic mice	WntH	7	9	15k
Mammary tumors from MMTV-Wnt-1 transgenic mice	WntT	33	9-56	15k (23 arrays), 8.7k (10 arrays)
Mammary tumors from MMTV-Neu transgenic mice	NeuT	12	32-60	15k
Normal fat tissue	Fat	3	12	15k
Mammary tumors from MMTV-Wnt-1 transgenic/P53-/- mice	WntT/p53-/-	6	9-14	8.7k
Mammary tumors from MMTV-Wnt-1 transgenic/Pten+/- mice with LOH at the Pten locus	WntT/Pten+/-LOH	3	12-21	8.7k

LOH, loss of heterozygosity; MMTV, mouse mammary tumor virus.