Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0306-4530(11)00087-4
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21458163/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21458163
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PGR-2
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy/pii?v=S0306-4530(11)00087-4