PMID: 8470829Mar 1, 1993Paper

Morphological evidence for secondary formation of the tail gut in the rat embryo

Anatomy and Embryology
Srećko GajovićA Svajger

Abstract

The secondary body formation is a developmental mechanism occurring in the caudal part of the embryo in which embryonic structures arise from a mass of mesenchymal cells without previous formation of germ layers. The formation of the tail gut by this mechanism was investigated on transverse serial semithin and ultrathin sections of 12-, 13-, 14- and 15-day rat embryo tails. The tail gut, together with the tail portion of the notochord, originates from an axial mass of condensed mesenchymal cells named tail cord. Formation of the tail gut involves the appearance of large intercellular junctions among tail cord cells, and rearrangement of these cells around a newly formed lumen. Mesenchymal characteristics of these cells are gradually lost, and they simultaneously acquire the morphology of epithelial cells. Some cells of the tail cord, located ventral to the tail gut, do not participate in the tail gut formation and form a separate mass of cells without any definitive morphogenetic fate. This surplus group of cells is first evident in 12-day embryos, and it increases in mass during the following 3 days. In 15-day embryos, after the tail gut has completely disappeared, the surplus cells represent all that remains of the tail cord....Continue Reading

References

Jan 1, 1992·Anatomy and Embryology·C M GriffithE J Sanders
Jan 1, 1991·Anatomy and Embryology·M Veini, R Bellairs
Jan 1, 1989·Anatomy and Embryology·S GajovićA Svajger
Apr 1, 1984·The American Journal of Anatomy·G C Schoenwolf

❮ Previous
Next ❯

Citations

Nov 28, 2009·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Dinko MitrecićRoland Pochet
Jun 1, 1996·Developmental Dynamics : an Official Publication of the American Association of Anatomists·S A Miller, A Briglin
Jul 28, 2004·The Anatomical Record. Part A, Discoveries in Molecular, Cellular, and Evolutionary Biology·Chiharu SasakiKeiichi Akita
Feb 8, 2007·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Mark S Cooper, Valerie C Virta
May 2, 2002·Developmental Dynamics : an Official Publication of the American Association of Anatomists·Evan M BraunsteinDeborah L Gumucio
Mar 1, 1996·Mechanisms of Development·V Wilson, R S Beddington
May 1, 1995·Mechanisms of Development·M CatalaN M Le Douarin
Nov 20, 2004·Cells, Tissues, Organs·Dinko MitrecićSrećko Gajović

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.