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

Explain benefits of protein, Explain benefits of Protein Protein: Once ...

Explain benefits of Protein Protein: Once the energy requirements have  been estimated, protein requirements can be addressed. The aim is to achieve nitrogen balance. There are

Explain about treatment and management of dyslipidemia, Q. Explain about Tr...

Q. Explain about Treatment and Management of Dyslipidemia? Maintenance of blood lipids within the normal range is the most essential objective to prevent the onset/progression

Explain food lipids, Explain Food lipids It is either consumed in the ...

Explain Food lipids It is either consumed in the form of "visible" fats, which have been separated from the original plant or animal sources, such as vegetable oil and butter,

What is trna structure , Transfer  RNA  (tRNA)  molecules  play  an  very s...

Transfer  RNA  (tRNA)  molecules  play  an  very significant  role  in  protein  synthesis. Each tRNA becomes covalently bonded to a particular amino acid  to  create  aminoacyl- t

Class of coclentrata, ????? # 100 ??????????? #Minimum ?????? ?????

????? # 100 ??????????? #Minimum ?????? ?????

What is non specific defence, What is Non specific defence Non specifi...

What is Non specific defence Non specifi c:  These relate to  the  physical barriers  like  skin  and mucous membrane. They form the first line of defence against entry of mic

What is infra-diaphragmatic type of tapvc, What is Infra-diaphragmatic Type...

What is Infra-diaphragmatic Type of TAPVC? Initial stages of operation are the same as for supracardiac type of TAPVC. The heart is lifted out of the pericardial cavity and c

Biology Question, Why is VeggieTales such a consistently high-quality progr...

Why is VeggieTales such a consistently high-quality program?

Define about the paracellular route - calcium, Define about the Paracellula...

Define about the Paracellular Route - Calcium? It involves passive Ca transport through the tight junctions between mucosal cells. The salient features include: It is in

Formation of primary urine in malpighian tubules, Normal 0 fals...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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