Primitive streak

Primitive streak

The beginning of the vertebral column in the human embryo that develops at approximately 14 days after conception.

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Part of Speech: noun
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Industry/Domain: Medical
Category: Stem cell research
Company: KUMC
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Related terms

primitive streak

Biology; Neuroscience

Axial thickening in the ectoderm of the gastrulas of reptiles, birds, and mammals; the mesoderm forms by the ingression of cells at this site.

primitive streak

Anatomy; Developmental anatomy

A faint white trace at the caudal end of the embryonic disc, formed by the movement of cells at the beginning of the mesoderm formation. It provides the earliest indication of the ...

primitive streak

Medical; Stem cell research

The beginning of the vertebral column in the human embryo that develops at approximately 14 days after conception.

primitive streak

Meat products; Poultry

A vertical, opaque line where the embryo begins to grow and develop.

primitive streak

Medical; Health care; Medicine

A linear band of rapidly proliferating cells that begins near the posterior end of an embryo and grows cranially. Primitive streak is formed during gastrulation by the convergent ...

primitive streak

Biology; Biochemistry; Molecular biology

Thickening of the epiblast cell layer caused my movement of mesodermal cells into the blastocoel; this structure is characteristic of avian, reptilian and mammalian gastrulation

potency

Medical; Stem cell research

The range of commitment options available to a cell.

pluripotent stem cells

Medical; Stem cell research

Stem cells that can develop into all the different cell types in the body except the placenta. They give rise to mulitpotent and unipotent stem cells as the embryo develops.

pluripotent

Medical; Stem cell research

Able to form all the body's cell lineages, including germ cells, and some or even all extraembryonic cell types. Example: embryonic stem cells.

plasticity

Medical; Stem cell research

Unproven notion that tissue stem cells may be able to generate the cell types of another tissue under certain conditions.

placenta

Medical; Stem cell research

The oval spongy structure in the uterus from which the fetus derives its nourishment and oxygen. The placenta develops from the outer cell layer of the blastocyst, called the ...