Cells which have not fully differentiated yet, i.e. with the potential to develop into other kinds of cells through asymmetric cell division.

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35
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2answers
2k views

Can brain cells move?

I was discussing this with my brother. I'm pretty sure I read somewhere that they can move. Thanks EDIT: By movement I mean long distance migration (preferably within the brain only).
6
votes
1answer
268 views

Is there any scientific evidence that a human has ever grown a third set of teeth?

This is about the possibility (or lack thereof) for a person to re-grow a new "permanent tooth" or set of teeth, to replace the teeth that grew after their milk teeth fell out. I had earlier seen ...
3
votes
3answers
186 views

Does a reduction in stem cells mean possible earlier death?

The basis of this question relies on my understanding of these 2 facts: ...
1
vote
0answers
39 views

from an ageing reproductive stem cell's DNA to baby's “brand new” somatic cells' DNA

On the one hand, somatic cells's DNA age as life goes on, mitosis after mitosis, and that is reflected into reduced telomeres. On the other hand, during life, reproductive stem cells must age too. ...
1
vote
1answer
110 views

How might IVF (and related technologies) alter epigenetic marks?

I was reading up on KCNQ1, which encodes a voltage-gated potassium channel, and I discovered that it happens to be only maternally expressed. This is regulated by KCNQ1OT1, a non-coding RNA, which is ...
3
votes
1answer
113 views

Could fingerprints potentially be changed using a gene gun?

Not to confuse with your "DNA fingerprint" I've read surgery is readily used to not just remove but even to change people's prints through employing very small grafts between opposing hands. About 5 ...
2
votes
3answers
71 views

Why are embryonic germ cells considered stem cells?

In a class that I'm taking we were presented 3 types of stem cells. Adult stem cells which come from bone marrow Embryonic stem cells which come from embryos Embryonic germ cells which come from ...
2
votes
2answers
586 views

How are different types of cells created from zygote?

In the process of mitosis that starts from zygote, how do different cells appear? What happens that some cells become one type and some another? For example, is there a cell that divides into a ...