Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/0165-5728(93)90263-X
Autoimmune Diseases	free resource	MedlinePlus Health Information	https://medlineplus.gov/autoimmunediseases.html
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTHrP-1
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:7684398