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

Haemocyanin - respiratory pigments, Haemocyanin - Respiratory Pigments ...

Haemocyanin - Respiratory Pigments This pigment is found in several arthropods and molluscs. Haemocyanins do not consist of haee groups. The metal they consist of is copper, w

Female reproductive disorders-hydro allantois, Hydrops allantois (Hydro all...

Hydrops allantois (Hydro allantois) This condition is uncommonly seen in dairy cattle and buffaloes. Accumulation of excessive allantoic fluid may be progressive after mid ges

Phyletic lineage, Ask questiona brief assignment on it #Minimum 100 words a...

Ask questiona brief assignment on it #Minimum 100 words accepted#

What is the results of congenital pulmonary stenosis, What is the Results o...

What is the Results of Congenital Pulmonary Stenosis? Early mortality for open pulmonary valvotomy in neonates varies between 6 and 10 per cent. For infants and children, surgi

Which are the glands present in the epidermis of mammals, Which are the gla...

Which are the glands present in the epidermis of mammals, birds and reptiles? In the epidermis of birds and reptiles there are almost no glands. In mammals there are sweat glan

Define the surgery process for cancer patient, Define the Surgery Process f...

Define the Surgery Process for Cancer Patient? Surgery is generally conducted in the absence of metastasis i.e. when a tumor is localized. Nutrition support would vary dependin

BNA and RNA, Compared to the original sequence what type of mutation occurr...

Compared to the original sequence what type of mutation occurred on the following DNA sequence? Original: TACGAATTCGATAC Mutant: TACASSTTCCATAC

How plant use day-night length to solve the paradox, How plants use the pat...

How plants use the pattern of changes in day/night length to solve the paradox that day length is equal twice a year. Plants possess the ability to balance the daily changes in

Dna replication at biochemical level, Although there is much talk in the ne...

Although there is much talk in the news about stem cell research, the public and policymakers need to understand how basic body cells work to transmit information and replicate to

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