Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34615725/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34615725
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD4-2
	subscription/membership/fee required	Silverchair Information Systems	https://aacrjournals.org/clincancerres/article-lookup/doi/10.1158/1078-0432.CCR-21-0845