Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	http://ijs.microbiologyresearch.org/pubmed/content/journal/ijsem/10.1099/ijsem.0.003324
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-PGR-2