| Label | Id | |
|---|---|---|
| blastula embryo | http://purl.obolibrary.org/obo/MAT_0000396 | |
| blastula stage | http://purl.obolibrary.org/obo/MAT_0000396 | |
| blood | http://purl.obolibrary.org/obo/MAT_0000315 | |
| blood cells | http://purl.obolibrary.org/obo/MAT_0000083 | |
| blood plasma | http://purl.obolibrary.org/obo/MAT_0000052 | |
| blood vessel | http://purl.obolibrary.org/obo/MAT_0000393 | |
| body ganglion | http://purl.obolibrary.org/obo/MAT_0000344 | |
| body part | http://purl.obolibrary.org/obo/MAT_0000293 | |
| bone | http://purl.obolibrary.org/obo/MAT_0000299 | |
| bone marrow | http://purl.obolibrary.org/obo/MAT_0000084 | |
| brain | http://purl.obolibrary.org/obo/MAT_0000098 | |
| brainstem | http://purl.obolibrary.org/obo/MAT_0000111 | |
| branchial arch | http://purl.obolibrary.org/obo/MAT_0000059 | |
| bronchus | http://purl.obolibrary.org/obo/MAT_0000133 | |
| brown fat | http://purl.obolibrary.org/obo/MAT_0000198 |