Name	Info	Provider	Link
HIV	free resource	MedlinePlus Health Information	https://medlineplus.gov/hiv.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=22246682.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22246682/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/22246682
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD4-2
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/jid/article-lookup/doi/10.1093/infdis/jir813