Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15327015.ui
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-GSTP1-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-651
	subscription/membership/fee required	De Gruyter	https://www.degruyter.com/document/doi/10.1515/CCLM.2004.132