| Label | Id | |
|---|---|---|
| Alice in Wonderland syndrome | http://id.nlm.nih.gov/mesh/2021/D062026 | |
| Alicyclobacillus | http://id.nlm.nih.gov/mesh/2021/D056450 | |
| Alien hand syndrome | http://id.nlm.nih.gov/mesh/2021/D055964 | |
| Alisma | http://id.nlm.nih.gov/mesh/2021/D034902 | |
| Alismataceae | http://id.nlm.nih.gov/mesh/2021/D034901 | |
| Alismatales | http://id.nlm.nih.gov/mesh/2021/D035961 | |
| alitretinoin | http://id.nlm.nih.gov/mesh/2021/C103303 | |
| alkali | http://id.nlm.nih.gov/mesh/2021/D000468 | |
| alkali metal | http://id.nlm.nih.gov/mesh/2021/D008672 | |
| Alkaline phosphatase | http://id.nlm.nih.gov/mesh/2021/D000469 | |
| alkaloid | http://id.nlm.nih.gov/mesh/2021/D000470 | |
| alkalosis | http://id.nlm.nih.gov/mesh/2021/D000471 | |
| alkane | http://id.nlm.nih.gov/mesh/2021/D000473 | |
| alkanolamine | http://id.nlm.nih.gov/mesh/2021/D000605 | |
| alkaptonuria | http://id.nlm.nih.gov/mesh/2021/D000474 |