ectoderm

Example Sentences

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Surface ectoderm is a dense sheet of epidermal progenitors, which gives rise to the surface covering of the body, such as skin, and the associated features of teeth, hair and fingernails.

From Science Daily • Mar. 4, 2024

Amniotic and surface ectoderm cells are specialised at an early stage of development and largely share biological features, such as gene expression patterns and signal requirements.

From Science Daily • Mar. 4, 2024

After gastrulation, the embryo can be thought of as an onion with three layers: the ectoderm, the mesoderm and the endoderm.

From Science Daily • Sep. 19, 2023

Diploblasts have a non-living layer between the endoderm and ectoderm.

From Textbooks • Jan. 1, 2015

The egg of Hydra is said to be fertilized as it lies at the base of the ectoderm, through which the fertilizing spermatozoon bores its way.

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson