| Label | Id | |
|---|---|---|
| mid culminant | http://purl.obolibrary.org/obo/MAT_0000324 | |
| middle ear | http://purl.obolibrary.org/obo/MAT_0000146 | |
| middle part of limb | http://purl.obolibrary.org/obo/MAT_0000092 | |
| mid intestine | http://purl.obolibrary.org/obo/MAT_0000047 | |
| migratory slug | http://purl.obolibrary.org/obo/MAT_0000325 | |
| mouth | http://purl.obolibrary.org/obo/MAT_0000038 | |
| multi fate stem cell | http://purl.obolibrary.org/obo/MAT_0000185 | |
| muscle organ - human | http://purl.obolibrary.org/obo/MAT_0000302 | |
| muscle system | http://purl.obolibrary.org/obo/MAT_0000025 | |
| muscular system | http://purl.obolibrary.org/obo/MAT_0000025 | |
| musculature | http://purl.obolibrary.org/obo/MAT_0000025 | |
| musculature system | http://purl.obolibrary.org/obo/MAT_0000025 | |
| mushroom body | http://purl.obolibrary.org/obo/MAT_0000336 | |
| mycelium | http://purl.obolibrary.org/obo/MAT_0000011 | |
| myocardium | http://purl.obolibrary.org/obo/MAT_0000453 |