Name	Info	Provider	Link
Breast Cancer	free resource	MedlinePlus Health Information	https://medlineplus.gov/breastcancer.html
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PGR-2
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-212
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:18632608
	subscription/membership/fee required	Silverchair Information Systems	https://aacrjournals.org/cancerres/article-lookup/doi/10.1158/0008-5472.CAN-07-5828