| ectoderm | http://purl.obolibrary.org/obo/MAT_0000173 | ectoderm | |
| egg | http://purl.obolibrary.org/obo/MAT_0000213 | egg | |
| ovum | http://purl.obolibrary.org/obo/MAT_0000213 | egg | |
| egg - unfertilized | http://purl.obolibrary.org/obo/MAT_0000124 | egg - unfertilized | |
| female gamete | http://purl.obolibrary.org/obo/MAT_0000124 | egg - unfertilized | |
| unfertiized egg | http://purl.obolibrary.org/obo/MAT_0000124 | egg - unfertilized | |
| ejaculatory duct | http://purl.obolibrary.org/obo/MAT_0000170 | ejaculatory duct | |
| embryo | http://purl.obolibrary.org/obo/MAT_0000226 | embryo | |
| embryo development stages | http://purl.obolibrary.org/obo/MAT_0000407 | embryo development stages | |
| embryo late (growth) stage | http://purl.obolibrary.org/obo/MAT_0000399 | embryo late (growth) stage | |
| fetus | http://purl.obolibrary.org/obo/MAT_0000399 | embryo late (growth) stage | |
| embryo mid-stage | http://purl.obolibrary.org/obo/MAT_0000398 | embryo mid-stage | |
| endocardium | http://purl.obolibrary.org/obo/MAT_0000455 | endocardium | |
| endoderm | http://purl.obolibrary.org/obo/MAT_0000175 | endoderm | |
| endometrium | http://purl.obolibrary.org/obo/MAT_0000319 | endometrium | |
| endosperm | http://purl.obolibrary.org/obo/MAT_0000227 | endosperm | |
| epiblast | http://purl.obolibrary.org/obo/MAT_0000067 | epiblast | |
| blastocyst | http://purl.obolibrary.org/obo/MAT_0000067 | epiblast | |
| epidermis | http://purl.obolibrary.org/obo/MAT_0000154 | epidermis | |
| hypodermis | http://purl.obolibrary.org/obo/MAT_0000154 | epidermis | |
| epididymus | http://purl.obolibrary.org/obo/MAT_0000130 | epididymus | |
| epithalamus | http://purl.obolibrary.org/obo/MAT_0000422 | epithalamus | |
| eubacterium | http://purl.obolibrary.org/obo/MAT_0000191 | eubacterium | |
| eVOC CV (EV) | http://purl.obolibrary.org/obo/MAT_0000426 | eVOC CV (EV) | |
| eVOC human development stage (EV) | http://purl.obolibrary.org/obo/MAT_0000435 | eVOC human development stage (EV) | |
| eVOC mouse development stage (EVM) | http://purl.obolibrary.org/obo/MAT_0000436 | eVOC mouse development stage (EVM) | |
| exoskeleton | http://purl.obolibrary.org/obo/MAT_0000150 | exoskeleton | |
| cuticle | http://purl.obolibrary.org/obo/MAT_0000150 | exoskeleton | |
| extraembryonic component | http://purl.obolibrary.org/obo/MAT_0000061 | extraembryonic tissue | |
| extraembryonic structure | http://purl.obolibrary.org/obo/MAT_0000061 | extraembryonic tissue | |