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

Define drug-nutrient interaction and drug- drug interactions, Define drug-n...

Define drug-nutrient interaction and drug- drug interactions? Generally, administering oral medication along with the food or at a mealtime is a convenient manner of drug dosin

Determine the nutritional and functional role of minerals, Minerals :-Copp...

Minerals :-Copper Food Source      Organ meats, sea foods, nuts, seeds Nutritional Functional role Essential nutrient: Deficiency is rare. Catalyst: Lipid perox

Eubiont, Eubiont The origin of true life , eubiont from a pmtobiont inv...

Eubiont The origin of true life , eubiont from a pmtobiont involves the acquisition of three major features: 1) assembly of phospholipids and proteins into a cell membrane f

What is gingival inflammation, What is Gingival Inflammation Areas of o...

What is Gingival Inflammation Areas of overt inflammation should be identified and the etiology investigated to initiate proper treatment.

Define the symptoms of dry beriberi, Define the Symptoms of Dry beriberi? ...

Define the Symptoms of Dry beriberi? Early symptoms are similar to those found in wet beriberi. The muscles become progressively wasted and weak and walking becomes difficult.

Define flow phase in physiological response to injury, Define Flow Phase in...

Define Flow Phase in Physiological Response to injury? It is characterized by hyper metabolism, increased cardiac output, increased urinary nitrogen losses, altered glucose met

Human factor theory - accident causation, Human Factor Theory - Accident Ca...

Human Factor Theory - Accident Causation This theory of accident causation suggests that a chain of events caused by human error is the cause of accident. The chain of events

Haemolysis-complications of prosthetic valves, Haemolysis :  Mechanical va...

Haemolysis :  Mechanical valves, bioprosthetic valves as well as valves repaired with annuloplasty rings may cause haemolysis and related anaemia. This is more common when there i

Determine the deamination during rna editing, Which of the following is not...

Which of the following is not needed for C to U deamination during RNA editing? A. Formation of localized segments of double stranded RNA. B. The 5' and 3' efficiency elemen

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