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RNA extraction from snap frozen lung


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#1 drdtkk

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Posted 12 May 2004 - 07:25 AM

I have extracted RNA from snap frozen lung using Trizol and while the UV spectrometry resuts are favourable the RNA gel is smeared. I use a mortar and pestle to grind the tissue in the Trizol but it takes upto 30 min.Is this too long for homogenization or is it ok as it is in Trizol? Is the RNA degraded or is it DNA contamination?

Any assistence would be welcome.

#2 labrat

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Posted 12 May 2004 - 11:09 PM

Beware of RNase contamination instead of DNA contamination. 30' won't be a problem. Do you use liquid nitrogen when doing homogenization?

#3 drdtkk

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Posted 14 May 2004 - 07:47 AM

No i haven't been using Liquid Nitrogen but I think that it clearly is the best way.




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