| Label | Id | |
|---|---|---|
| 1,8-p-Menthadien-7-ol | http://id.nlm.nih.gov/mesh/2021/C032208 | |
| 18p- syndrome | http://id.nlm.nih.gov/mesh/2021/C538309 | |
| 18P Syndrome | http://id.nlm.nih.gov/mesh/2021/C538309 | |
| 18q- syndrome | http://id.nlm.nih.gov/mesh/2021/C536580 | |
| 18S rDNA | http://id.nlm.nih.gov/mesh/2021/D012337 | |
| 18S ribosomal RNA | http://id.nlm.nih.gov/mesh/2021/D012337 | |
| 18S rRNA | http://id.nlm.nih.gov/mesh/2021/D012337 | |
| 18th century | http://id.nlm.nih.gov/mesh/2021/D049671 | |
| 18th-century | http://id.nlm.nih.gov/mesh/2021/D049671 | |
| 18th State | http://id.nlm.nih.gov/mesh/2021/D008145 | |
| 18 trisomy | http://id.nlm.nih.gov/mesh/2021/D000073842 | |
| 1,9,10,11,12,12-hexachloro-4,6-dioxa-5-thiatricyclo[7.2.1.0(2,8)]dodec-10-ene 5-oxide | http://id.nlm.nih.gov/mesh/2021/D004726 | |
| 1918-1920 flu pandemic | http://id.nlm.nih.gov/mesh/2021/D064149 | |
| 1918 flu pandemic | http://id.nlm.nih.gov/mesh/2021/D064149 | |
| 1918 flu pandemic spread | http://id.nlm.nih.gov/mesh/2021/D064149 |
