| Label | Id | |
|---|---|---|
| Actinobacteria | http://id.nlm.nih.gov/mesh/2021/D039903 | |
| Actinomyces | http://id.nlm.nih.gov/mesh/2021/D000190 | |
| Actinomycetaceae | http://id.nlm.nih.gov/mesh/2021/D000191 | |
| Actinomycetales | http://id.nlm.nih.gov/mesh/2021/D000192 | |
| actinorhodine | http://id.nlm.nih.gov/mesh/2021/C013390 | |
| action potential | http://id.nlm.nih.gov/mesh/2021/D000200 | |
| activated protein C resistance | http://id.nlm.nih.gov/mesh/2021/D020016 | |
| active immunotherapy | http://id.nlm.nih.gov/mesh/2021/D016233 | |
| active transport | http://id.nlm.nih.gov/mesh/2021/D001693 | |
| activin complex | http://id.nlm.nih.gov/mesh/2021/D028341 | |
| activities of daily living | http://id.nlm.nih.gov/mesh/2021/D000203 | |
| activity tracker | http://id.nlm.nih.gov/mesh/2021/D000072936 | |
| actuarial science | http://id.nlm.nih.gov/mesh/2021/D000206 | |
| acupuncture | http://id.nlm.nih.gov/mesh/2021/D026881 | |
| acupuncture point | http://id.nlm.nih.gov/mesh/2021/D015669 |