Name Info Provider Link
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15859522.ui
subscription/membership/fee required Springer https://www.springerlink.com/openurl.asp?genre=article&issn=0006-2928&volume=43&issue=1-2&spage=79
free resource NCI CPTC Antibody Characterization Program https://antibodies.cancer.gov/detail/CPTC-OTUB1-1