Examlex
What is an optical brightener and how does it work?
Primitive Groove
A depression or furrow on the surface of an early embryo that is involved in the process of gastrulation, leading to the development of different layers.
Gastrulation
An early embryonic phase in animal development during which the single-layered blastula is reorganized into a multilayered structure known as the gastrula.
Morula Stage
An early stage in embryonic development characterized by a solid ball of cells resulting from the division of a fertilized egg.
Human Embryo
A human embryo is an early stage of human development, following fertilization and preceding the fetal stage, during which all major organs and structures begin to form.
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