Name	Info	Provider	Link
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1290/1071-2690(2001)037<0641:eoscai>2.0.co;2
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-CD40-4
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:11776968