| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | NCI CPTC Antibody Characterization Program | https://antibodies.cancer.gov/detail/CPTC-PTHrP-2 | |
| subscription/membership/fee required | Silverchair Information Systems | https://iovs.arvojournals.org/article.aspx?volume=33&issue=5&page=1717 |