Definition: The entity of a developing mammal (MAMMALS), generally from the cleavage of a ZYGOTE to the end of embryonic differentiation of basic structures. For the human embryo, this represents the first two months of intrauterine development preceding the stages of the FETUS.
human: 0-2 months; use for mammalian embryo as an entity or as tissue; use the qualifier / embryol with an organ for embryologic aspects of that organ; embryonic tissue or cells in tissue & cell cultures: coordinate EMBRYO, MAMMALIAN + tissues or cell w
See AlsoCell Differentiation; Embryo Research; Fetus; Gestational Age ExamplesBlastocyst; Extraembryonic Membranes