Recently, lack of PAX8 expression and positivity for GATA-3 were also defined in solid cell nests, common ultimobranchial
body remnants that can sometimes present with hyperplastic proliferations in the thyroid gland.
When the developing thyroid reaches its final position at the base of the neck in front of the trachea, the fusion of the ultimobranchial
bodies takes place to give rise to C cells.
Common cytochemical and ultrastructural characteristics of cells producing polypeptide hormones (the APUD series) and their relevance to thyroid and ultimobranchial
C cells and calcitonin.
TZ indicates the point of fusion of ultimobranchial
body and principal median thyroid process.
Effects of the insecticide cypermethrin on plasma calcium and ultimobranchial
gland of a teleost Heteropneustes fossilis.
Effects of calcitonin administration on the ultimobranchial
body and parathyroid glands of the freshwater snake, Natrix piscator.
gland and congenital thyroid abnormalities in man.
(1-4) Each arch is composed of ectoderm, which will form the epidermis and sensory neurons; the neural crest, from which will develop the skeletal and connective tissues; the mesoderm, from which will arise the musculature and endothelial cells; and the endoderm, which will form the epithelial lining of the pharynx, the taste buds, the thyroids, parathyroids, ultimobranchial
glands, and thymus?
C cells are neural crest-derived cells arising from ultimobranchial
The second group consists of carcinoma arising from parafollicular cells of ultimobranchial
body of neural crest, which is the medullary carcinoma.
C cells arise from the ultimobranchial
body, which is derived from the fourth pharyngeal pouch, and they are found in the upper and middle areas of the thyroid lobes.