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Embryogenesis

Embryogenesis

The processes leading to the development of an embryo from egg to completion of the embryonic stage.


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which mechanism triggers the first cell differentiation?

... the first cell differentiation after n divisions. I read some articles (on Biology Stack Exchange and Wikipedia) on cellular differentiation and embryogenesis but still fail to understand what exactly makes it so that starting from a given division cells suddenly start to be different. Wikipedia ...

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by WoJ
Mon Jul 22, 2013 6:18 pm
 
Forum: Cell Biology
Topic: which mechanism triggers the first cell differentiation?
Replies: 4
Views: 2570

Apoptosis in the substantia nigra

... with neuronal senescence remains to be elucidated. Apoptosis and autophagic degeneration, two modes of programmed cell death described in embryogenesis and tissue renewal in adult, have been observed in nigral dopaminergic neurons in patients with Parkinson's disease. In the present study, ...

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by MarkHolland
Sat Mar 30, 2013 3:03 pm
 
Forum: Cell Biology
Topic: Apoptosis in the substantia nigra
Replies: 1
Views: 2330

Females heterozygous for X linked diseases

First, the inactivation is done during embryogenesis and then is passed through during mitosis, so it would not be half cells, but probably either all or none. However, I think it's not that simple. There should be some discussion about that ...

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by JackBean
Mon Jan 07, 2013 11:43 am
 
Forum: Genetics
Topic: Females heterozygous for X linked diseases
Replies: 1
Views: 1312

imprinted genes inactivation

they are inactivated during the production of gametes and they keep that status during embryogenesis

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by JackBean
Thu Jan 26, 2012 7:05 pm
 
Forum: Genetics
Topic: imprinted genes inactivation
Replies: 5
Views: 1566

Re: Embryogenesis

Although, any further replies explaining why its proliferation first would be appreciated. Is it because cells need to proliferate before they start to differentiate? (Just by logic)

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by tnnn
Tue May 24, 2011 11:12 am
 
Forum: Cell Biology
Topic: Embryogenesis
Replies: 3
Views: 2226
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