Source of cells for regeneration, Biology

Assignment Help:

Source of Cells for Regeneration

It had been considered earlier that interstitial cells constitute a reserve of undifferentiated cells that provide the cellular material for regeneration in hydra by mitotic divisions. Though recent studies have displayed that cell division in the interstitial cells can be prevented by nitrogen mustard or irradiations, and still regeneration takes place. The cells after that taking part are the differentiated cells of epidermis and gastrodermis that following amputational injury lose their specialized features, dedifferentiate and are then reorganized or moulded to from the missing structures, tentacles or the hypostome, mouth, the pedal disc as the case may be.

Interstitial cells are not necessary for regeneration, which occurs even when they are put out of action. Though, normally, the interstitial cells also participate in morphallactic regeneration in Hydra. The ectodermal and endodermal cells related to two other self-renewing lineages. Studies completed by Haynes and Burnett (1963) have shown that in hydras such as Pelmatohydra oligactis and Hydra viridis, the endoderm alone can regenerate an entire animal. In this kind of regeneration, the piece of endodermal cells of hydra first lose their differentiated features and after that re-differentiate into ectoderm, interstitial cells and endodermal components of the regenerated part.


Related Discussions:- Source of cells for regeneration

What is the main nitrogen waste of humans, Q. What is the main nitrogen was...

Q. What is the main nitrogen waste of humans? Human beings excrete largely urea eliminated with the urine.

Advantages of the dsme, Following are the advantages of the DSME: It enable...

Following are the advantages of the DSME: It enables the patient to 1. Accept the disease. 2. Gain knowledge about disease, its prevention, treatment and management. 3.

Importance of counselling for diabetic patient, Q. Importance of counsellin...

Q. Importance of counselling for diabetic patient? Diabetes is a life-long illness. Life style modification and precautions taken by the patient can prevent complications and i

What is telophase, What is telophase? Telophase is the cell divides apa...

What is telophase? Telophase is the cell divides apart and screws itself.

What is the effect of increase temperature, 1) What is the effect of increa...

1) What is the effect of increase temperature on a non enzyme catalyzed reaction? 2) What are the effects of increased temperature on an enzyme catalyzed reaction?

What do you understand by carcinogen, What do you understand by Carcinogen?...

What do you understand by Carcinogen? Carcinogen is an agent or a process, which significantly triggers the cell to grow in an uncontrolled manner producing malignant neoplasm

What are the mitochondria, Q. What are the mitochondria? What is the fundam...

Q. What are the mitochondria? What is the fundamental morphology of these organelles and in which cells can they be found? Mitochondria are the organelles in which the most sig

Diverse proteins made by the same total number of amino acid, Q. Are there ...

Q. Are there diverse proteins made by the same total number of amino acids? Diverse proteins with the same total number of amino acids may exist. In such cases the discriminati

Explain nutritional support management for radiation therapy, Explain Nutri...

Explain Nutritional Support Management for radiation therapy? For managing these patients on radiation therapy, the following measures can be under taken: 1. Administration

steps of c-dna creation and mrna, C dna is made from a mature m rna of euk...

C dna is made from a mature m rna of eukaryotic cell with the utilization of enzyme called as reverse transcriptase. Steps in c dna creation 1. m rna is made and purified f

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd