What is ultimobranchial body?

Some articles on ultimobranchial body:

Parafollicular Cell
... a structure outside of the thyroid gland named the ultimobranchial body ... of cells with quail nuclei populating the ultimobranchial body and concluded that C cells migrate during embryologic development from the neural crest ... Embryologically, they associate with the ultimobranchial body, which itself is a ventral derivative of the fourth (or fifth) pharyngeal pouch ...

Famous quotes containing the word body:

    That sound, everywhere about us, of the sea—
    the tree among its tresses has always heard it,
    and the horse dips his black body in the sound
    stretching his neck as if towards drinking water ...
    Denise Levertov (b. 1923)