It was once believed that cells grown in laboratory tissue : GMAT Critical Reasoning (CR)
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# It was once believed that cells grown in laboratory tissue

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It was once believed that cells grown in laboratory tissue [#permalink]

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29 Nov 2006, 07:51
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8. It was once believed that cells grown in laboratory tissue cultures were essentially immortal. That is, as long as all of their needs were met, they would continue dividing forever. However, it has been shown that normal cells have a finite reproductive limit. A human liver cell, for example, divides 60 times and then stops. If such a cell divides 30 times and then is put into a deep freeze for months or even years. It â€œremembersâ€
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Re: CR on tissue cultures!!! [#permalink]

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29 Nov 2006, 08:14
8. It was once believed that cells grown in laboratory tissue cultures were essentially immortal. That is, as long as all of their needs were met, they would continue dividing forever. However, it has been shown that normal cells have a finite reproductive limit. A human liver cell, for example, divides 60 times and then stops. If such a cell divides 30 times and then is put into a deep freeze for months or even years. It â€œremembersâ€
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29 Nov 2006, 11:25
B...
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29 Nov 2006, 14:11
B !
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29 Nov 2006, 18:38
straight B
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29 Nov 2006, 18:41
Only we need to be careful about CANNOT, rest is easy.
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30 Nov 2006, 01:25
ak_idc wrote:
Only we need to be careful about CANNOT, rest is easy.

True
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30 Nov 2006, 02:11
guys the oA is B!
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30 Nov 2006, 10:33
Yes B
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30 Nov 2006, 11:50
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Re: CR on tissue cultures!!! [#permalink]

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30 Nov 2006, 19:33
[quote="jyotsnasarabu"]8. It was once believed that cells grown in laboratory tissue cultures were essentially immortal. That is, as long as all of their needs were met, they would continue dividing forever. However, it has been shown that normal cells have a finite reproductive limit. A human liver cell, for example, divides 60 times and then stops. If such a cell divides 30 times and then is put into a deep freeze for months or even years. It â€œremembersâ€
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01 Dec 2006, 23:24
b 2
01 Dec 2006, 23:24
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