Please register and log-in to create and edit pages

User Tools

    Please register and log-in to create and edit pages

Site Tools


Main Menu

Main menu
Click categories to expand


A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing

This is an alphabetical index of all content pages.


Other categories

Utilities

Contacts
Register

Also see

Importance Ratings
News
Legal
Donate/Sponsor


Wikenigma supports:


Feeds etc
rss / xml feed
sitemap file
A-Z listing (archived)

Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown Science

Cell Differentiation

“The mechanisms that link cellular differentiation programs and dynamic gene regulation in complex eukaryotic systems remain mysterious. Such programs drive diverse and central biological processes including organismal development, immune function, disease progression, and meiosis.”

Source: The Brar Lab at Berkeley

Although there has been extensive progress in the understanding of factors involved with cellular differentiation, a full description of how stem cells differentiate into radically different forms (to generate the diverse structure of complex organisms) is elusive.

Each cell of a mammal (for example) carries the full genetic code to form any cell within the body. As an embryo develops, multiple sets of genes are 'turned off' within a cell, leaving the only the correct set operating to form the target cell.

There are many theoretical proposals to explain how this occurs - including 'epigenetic' factors (i.e. outside the chromosomes) e.g. hormones etc. - which might influence the growth and final destiny of a cell.


Also see : Cell proliferationplugin-autotooltip__plain plugin-autotooltip_bigCell proliferation

When organic 'tissue' grows (either during embryonic development, post-natal growth, or tissue regeneration) there are two processes in operation which determine the final size of the tissue or organ. The first is the size of the cells themselves - w…


    Share this page :

X

Dear reader : Do you have any suggestions for the site's content?

Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.

If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !


Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.

( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)

Show another (random) page

DOKUWIKI IMPLEMENTATION DESIGN BY UNIV.ORG.UK JUNE 2021