| Name | Info | Provider | Link |
|---|---|---|---|
| Stem Cells | free resource | MedlinePlus Health Information | https://medlineplus.gov/stemcells.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=30566572.ui | |
| free resource | China Science Publishing and Media Ltd. | https://www.sciengine.com/doi/10.1093/abbs/gmy158 | |
| subscription/membership/fee required | Silverchair Information Systems | https://academic.oup.com/abbs/article-lookup/doi/10.1093/abbs/gmy158 |