| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Nature Publishing Group | https://doi.org/10.1203/01.pdr.0000219396.34610.4a | |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=16641203.ui | |
| free resource | NCI CPTC Antibody Characterization Program | https://antibodies.cancer.gov/detail/CPTC-PGR-1 |