| Label | Id | |
|---|---|---|
| anthroposophy | http://id.nlm.nih.gov/mesh/2021/D000887 | |
| antiandrogen | http://id.nlm.nih.gov/mesh/2021/D000726 | |
| antiarrhythmic agent | http://id.nlm.nih.gov/mesh/2021/D000889 | |
| antibiotic | http://id.nlm.nih.gov/mesh/2021/D000900 | |
| antibiotic resistance | http://id.nlm.nih.gov/mesh/2021/D004352 | |
| antibody-dependent cellular cytotoxicity | http://id.nlm.nih.gov/mesh/2021/D000920 | |
| antibody-dependent enhancement | http://id.nlm.nih.gov/mesh/2021/D019067 | |
| antibody | http://id.nlm.nih.gov/mesh/2021/D000906 | |
| anticarcinogens | http://id.nlm.nih.gov/mesh/2021/D016588 | |
| anticholinergic | http://id.nlm.nih.gov/mesh/2021/D018680 | |
| anticipation | http://id.nlm.nih.gov/mesh/2021/D020132 | |
| anticoagulant | http://id.nlm.nih.gov/mesh/2021/D000925 | |
| anticodon | http://id.nlm.nih.gov/mesh/2021/D000926 | |
| anticonvulsant | http://id.nlm.nih.gov/mesh/2021/D000927 | |
| antidepressant | http://id.nlm.nih.gov/mesh/2021/D000928 |