notochord

First, they possess a notochord during at least some stage in their development.

Research into the notochord has played a key role in understanding the development of the central nervous system.

Notochord, a flexible supporting rod along the back of an animal.

However, in a small percentage of people, some tissues from the notochord do not disappear.

Second, they possess a hollow nerve cord down the back, just under the notochord.

This is where the notochord and the dorsal nerve cord develop.

The notochord plays an integral role in the development of the neural tube.

In later development expression is localised to the node and notochord.

Chordata have a notochord at some point in their life, but it is not required to be permanent.

Chordata is a phylum (group) of animals which have a notochord.

It was determined through experimentation that the notochord is essential in floor plate formation.

The notochord extends beneath the neural tube from the head to the tail.

All chordates possess a notochord and gills at some stage of their development.

It had a primitive notochord, a structure that could have developed into a vertebral column later.

A long linear impression runs along the "back" of the body looking something like a chordate notochord.

The notochord, which is present in the young, is gradually replaced by cartilage.

In higher vertebrate animals, the notochord is replaced before birth by a backbone.

Another high point was the development of the notochord which, in millions of years to come, evolved into a backbone.

The notochord is found ventral to the neural tube.

They arise from cellular remnants of the primitive notochord, which is present in the early embryo.

There is probably a notochord, although only a short segment is preserved in the single known specimen.

This process is also tied to the development of an anterior brain in the chordates from the notochord.

It must be an invertebrate, which means it does not have a backbone or notochord.

The 'notochord' is a flexible, rod-shaped body found in embryos of all chordates.