Name Info Provider Link
subscription/membership/fee required Atypon https://www.worldscientific.com/doi/10.1142/S0192415X05002850?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Antioxidants free resource MedlinePlus Health Information https://medlineplus.gov/antioxidants.html
free resource NCI CPTC Antibody Characterization Program https://antibodies.cancer.gov/detail/CPTC-PGR-1