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  • Liquid nitrogen closed probe on eyelid
  • Liquid nitrous oxide spray being used to treat
  • Liquid 'Cologel' : for the management of constipation.
  • Liquid gaseous nitrous oxide closed probe in use.
  • Carnrick's Liquid Peptonoids : beef, milk and wheat (pre-digested).
  • Carnrick's Liquid Peptonoids : beef, milk and wheat (pre-digested).
  • Sarcoid: freezing with liquid nitrogen
  • Arnold's nitrospray unit: liquid nitrogen
  • Conical flask with blue liquid
  • Conical flask with black liquid