Name	Info	Provider	Link
Breast Cancer	free resource	Genetic Alliance	https://www.diseaseinfosearch.org/result/960
Breast Cancer	free resource	MedlinePlus Health Information	https://medlineplus.gov/breastcancer.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21326033.ui
Information About the Mentioned Antibodies	free resource	SciCrunch	https://scicrunch.org/21326033
	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-192
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:21326033
	free resource	Biospecimen Research Database	https://brd.nci.nih.gov/brd/paper/diagn-mol-pathol/2011/quantitative-determination-of-estrogen-receptor-progesterone/10908
	subscription/membership/fee required	Wolters Kluwer	https://doi.org/10.1097/PDM.0b013e3181e3630c