Name	Info	Provider	Link
COVID-19 (Coronavirus Disease 2019)	free resource	MedlinePlus Health Information	https://medlineplus.gov/covid19coronavirusdisease2019.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/34389625/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/34389625
	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-438
	subscription/membership/fee required	Silverchair Information Systems	https://journals.aai.org/jimmunol/article-lookup/doi/10.4049/jimmunol.2100465