Name	Info	Provider	Link
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31428530/
	subscription/membership/fee required	Taylor & Francis	https://www.tandfonline.com/doi/full/10.1080/2162402X.2019.1638210
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31428530
	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-1776
Full text from	free resource	Linkoping University Electronic Press	http://liu.diva-portal.org/smash/get/diva2:1339525/FULLTEXT01.pdf