Name	Info	Provider	Link
	subscription/membership/fee required	Atypon	https://journals.asm.org/doi/10.1128/aem.59.11.3592-3596.1993?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/16349078/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/16349078
	free resource	NCI CPTC Antibody Characterization Program	https://antibodies.cancer.gov/detail/CPTC-GRB2-1
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-699