Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0006-4971(20)82393-3
HIV	free resource	MedlinePlus Health Information	https://medlineplus.gov/hiv.html
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD4-2