| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Atypon | https://guilfordjournals.com/doi/10.1521/aeap.16.3.238.35437 | |
| HIV | free resource | MedlinePlus Health Information | https://medlineplus.gov/hiv.html |
| free resource | NCI CPTC Antibody Characterization Program | https://antibodies.cancer.gov/detail/CPTC-CD4-1 |