Name	Info	Provider	Link
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s00223-004-0292-9
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PTGS2-1
NBRP resources	free resource	National BioResource Project	https://rrc.nbrp.jp/references/list?pubmed=15592795