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Ectoderm

Ectoderm

the outer of the three germ layers of the embryo (the other two being mesoderm and endoderm). Ectoderm gives rise to epidermis and neural tissue.


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Re: adult stem cells, differentiated cells and proliferation

... organism. Adult stem cells however have lost some of their potency and are Pluripotent- They can only differentiate into the three germ layers, Ectoderm, mesoderm (if present) and Endoderm. I suggest you look up the Cell cycle as it will help you understand somatic cell replication and cancerous ...

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by Amphibitile
Sun Jun 23, 2013 1:11 am
 
Forum: Cell Biology
Topic: adult stem cells, differentiated cells and proliferation
Replies: 2
Views: 2201

Sarcoma vs Carcinoma

... means: a tumour originating in the epithelium, or can it also come from endothelium, or basically any tissue that derives from the embryonic ectoderm? Same with sarcoma: any type of tumour that has the origin in the mesoderm? (e.g. A tumor of the blood cell lineage, bone marrow, are also ...

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by kk
Mon Nov 28, 2011 4:50 pm
 
Forum: Human Biology
Topic: Sarcoma vs Carcinoma
Replies: 0
Views: 1533

what is a tissuespecific gene? transcription factors?

... two organs completely do not develop at all. but these two organs are made from different tissue -- one forms from mesoderm, the other from ectoderm. so how is this gene considered tissue specific? also, transcription factors are needed for the regulation of gene expression (for binding ...

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by naejjiv
Mon Aug 23, 2010 3:50 pm
 
Forum: Molecular Biology
Topic: what is a tissuespecific gene? transcription factors?
Replies: 3
Views: 3261

Cells positioning

... as by specific apoptosis patterns and up-/downregulation of developmental gene regions. One crucial feature is the formation of the cell layers ectoderm, endoterm and mesoterm, which eventually develop into organs and other body parts by very specific events of cleavage, splitting, folding and ...

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by biohazard
Mon Nov 09, 2009 9:47 am
 
Forum: General Discussion
Topic: Cells positioning
Replies: 7
Views: 4205

How did the brain form?

... on "cephalization." Sensory and processing cells probably started on the surface (which is probably why even internal systems start as ectoderm) with deeper semi-coordinated connections, as in nerve nets. Better interactions and some under-the-surface protection all would have been ...

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by Darby
Fri Mar 13, 2009 12:28 pm
 
Forum: Evolution
Topic: How did the brain form?
Replies: 6
Views: 4104
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