Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://www.atsjournals.org/doi/10.1165/rcmb.2019-0056OC?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31922883.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31922883/
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD47-4
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/non-CPTAC-1162