What do you do with liquid nitrogen?

Question: What do you do with liquid nitrogen?
- Keywords:
  liquid nitrogen
Asked by anon-218617 to Shannah on 13 Jun 2019. This question was also asked by anon-218619, anon-218611.
- Shannah Gates answered on 13 Jun 2019:
  
  I use it to freeze samples of roots or DNA as its super cold! -196

anon-218617 commented on 13 Jun 2019:

Wouldn’t this temperature damage the cells?

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Question: What do you do with liquid nitrogen?