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