| germ layer |
The main divisions of tissue types in multicellular organisms. Diploblastic organisms (eg. coelenterates) have two layers, ectoderm and endoderm; triploblastic organisms (all higher animal groups) have mesoderm between these two layers. ...
출처: worms.zoology.wisc.edu/urchins/SUglossary.html
|
|---|---|
| germ layer t. |
the theory that the embryo develops three primary germ layers, each of which gives rise to definite organ derivatives.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
|