Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0035-9203(06)00163-5
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD4-2
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-369
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/trstmh/article-lookup/doi/10.1016/j.trstmh.2006.02.019