| Name | Info | Provider | Link |
|---|---|---|---|
| HIV | free resource | MedlinePlus Health Information | https://medlineplus.gov/hiv.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=15213570.ui | |
| free resource | NCI CPTC Antibody Characterization Program | https://antibodies.cancer.gov/detail/CPTC-CD4-1 | |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/00126334-200407010-00013 |