Liquid nitrogen and liquid helium are the two cryogens used at Connecticut College, primarily in the chemistry department for the Nuclear Magnetic Resonance (NMR) machine. Small quantities of liquid ...

There are many variables affecting the quality of frozen sections. You may have to experiment with different methods. Be advised that it can be difficult to get acceptable sections from some tissues.

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Cryogenic liquids are materials with a boiling point of less than – 100 °F (-73 °C); common examples include liquid nitrogen, helium, and argon, and dry ice/alcohol slurries. Cryogenic liquids undergo ...