Embryo multiplication and transfer (EMT)
The cloning of animal embryos and their subsequent transfer to recipients (via artificial inembryonation (q.v.)). The cloned embryos can be clones of an embryo or of an adult

Embryo sexing
The determination of the sex of an embryo, typically by means of PCR (q.v.) involving amplification from a small sample of embryonic tissue, using primers specific for a locus on the Y chromosome
Embryo splitting
The splitting of young embryos into several sections, each of which develops into an animal. A form of animal cloning, i.e., of producing animals that are genetically identical. In practice, the number of identicals (identical organisms) that can be produced from a single embryo is less than 10

Embryoid
An embryo-like body developing in vitro. It forms a complete, self-contained platelet with no vascular connection with the callus. The term embryoid is no longer commonly used. See embryo.

Embryonic stem cells
Cells of the early embryo that can give rise to all differentiated cells, including germ line cells.

Empirical
Relating to or based upon practical experience, trial and error, direct observation or observation alone, without benefit of scientific method, knowledge or theory.

EMT
See embryo multiplication and transfer.