Name Info Provider Link
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=38960384.ui
free resource NCI CPTC Antibody Characterization Program https://antibodies.cancer.gov/detail/CPTC-TUBB-1
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/cei/article-lookup/doi/10.1093/cei/uxae053