| corpus callosum | http://purl.obolibrary.org/obo/MAT_0000286 | corpus callosum | |
| corpus cardiacum | http://purl.obolibrary.org/obo/MAT_0000211 | corpus cardiacum | |
| cotyledon | http://purl.obolibrary.org/obo/MAT_0000359 | cotyledon | |
| cotyledon | http://purl.obolibrary.org/obo/MAT_0000230 | cotyledon | |
| cranial ganglia | http://purl.obolibrary.org/obo/MAT_0000200 | cranial ganglion | |
| cranial ganglion | http://purl.obolibrary.org/obo/MAT_0000200 | cranial ganglion | |
| cranial placode | http://purl.obolibrary.org/obo/MAT_0000369 | cranial placode | |
| cranial skeleton | http://purl.obolibrary.org/obo/MAT_0000149 | craniofacial skeleton bone | |
| cranial skeleton | http://purl.obolibrary.org/obo/MAT_0000340 | cranium | |
| craniofacial skeleton bone | http://purl.obolibrary.org/obo/MAT_0000149 | craniofacial skeleton bone | |
| craniofacial tissue | http://purl.obolibrary.org/obo/MAT_0000017 | craniofacial tissue | |
| cranium | http://purl.obolibrary.org/obo/MAT_0000149 | craniofacial skeleton bone | |
| cranium | http://purl.obolibrary.org/obo/MAT_0000340 | cranium | |
| cuticle | http://purl.obolibrary.org/obo/MAT_0000150 | exoskeleton | |
| cyanobacterium | http://purl.obolibrary.org/obo/MAT_0000192 | cyanobacterium | |
| decidua | http://purl.obolibrary.org/obo/MAT_0000290 | decidua | |
| deferent duct | http://purl.obolibrary.org/obo/MAT_0000129 | ductus deferens | |
| definitive endoderm | http://purl.obolibrary.org/obo/MAT_0000527 | definitive endoderm | |
| dental plate | http://purl.obolibrary.org/obo/MAT_0000041 | tooth | |
| dermal system | http://purl.obolibrary.org/obo/MAT_0000033 | integumental system | |
| dermis | http://purl.obolibrary.org/obo/MAT_0000153 | dermis | |
| descending colon | http://purl.obolibrary.org/obo/MAT_0000313 | descending colon | |
| developmental tissue - animal | http://purl.obolibrary.org/obo/MAT_0000019 | developmental tissue - animal | |
| developmental tissue - plant | http://purl.obolibrary.org/obo/MAT_0000518 | developmental tissue - plant | |
| diaphragm | http://purl.obolibrary.org/obo/MAT_0000502 | diaphragm | |
| Dictyostelium discoideum (DDANA) | http://purl.obolibrary.org/obo/MAT_0000388 | Dictyostelium discoideum (DDANA) | |
| diencephalon | http://purl.obolibrary.org/obo/MAT_0000420 | diencephalon | |
| digestive system | http://purl.obolibrary.org/obo/MAT_0000018 | digestive system | |
| digit | http://purl.obolibrary.org/obo/MAT_0000285 | digit | |
| distal | http://purl.obolibrary.org/obo/MAT_0000486 | distal | |