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	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25189857/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/25189857
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PGR-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-73
	free resource	scite Smart Citations	https://scite.ai/reports/25189857