Source of cells for regeneration, Biology

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.

Posted Date: 1/31/2013 5:39:50 AM | Location : United States







Related Discussions:- Source of cells for regeneration, Assignment Help, Ask Question on Source of cells for regeneration, Get Answer, Expert's Help, Source of cells for regeneration Discussions

Write discussion on Source of cells for regeneration
Your posts are moderated
Related Questions
Wildlife - Ecology The term wildlife probably originated in 1913 in a book, Our Vanishing Wildlife by William Hornaday, Director of the New York Zoological Park. The main focu

Define Principle of colorimetric method-2, 4 dinitrophenylhydrazine? Ascorbic acid is oxidized to dehydro ascorbic acid by copper (Cu ++ ) ions. 2, 4 dinitrophenyl hydrazine re

Fishe s - Heart is 2 chambered 1 auricle & 1 ventricle present. Sinus venosus, truncus or conus arteriusus present. Only impure blood come in heart so heart is venous he

Diesel-like liquid obtained from materials of biological origin is called biodiesel. Biodiesel can be obtained (i) either from lipids accumulated plants and algae or (ii) from

What is the basic need for bone grafting The basic need for bone grafting includes situations like: 1. Implant site development- when the quantity of bone is deficient to s

In the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint. Although still fragmentary, the available fossil evidence makes it possible to c

Q. What is the difference between smallpox (variola) and measles? The Smallpox is a viral infection like measles. The Smallpox is transmitted by respiratory secretions, saliva

From Molecules to the First Cell The prebiotic conditions on the earth in all probability were volcanic eruptions, lightning and heavy rains. There was no trace of free oxygen

State the term - structural abnormality and unique behavioural The link between structural abnormality and unique behavioural aberration has become clearer as technological adv

Q. What is Phenylketonuria? The essential amino acid phenylketonuria is utilized for tissue protein synthesis and hydroxylated to form tyrosine. The hydroxylation reaction requ