title: PRESERVATION OF CELL CULTURES BY FREEZING IN LIQUID NITROGEN VAPOR.
mesh_terms: D018929:Cell Culture Techniques; D005615:Freezing; D005740:Gases; D009584:Nitrogen; D011309:Preservation, Biological; D012034:Refrigeration; D012106:Research; D046509:Tissue Culture Techniques
chemical_list: D005740:Gases; D009584:Nitrogen
keywords: EXPERIMENTAL LAB STUDY; NITROGEN; REFRIGERATION; TISSUE CULTURE