title: LIQUID NITROGEN FREEZING IN MICROBIOLOGICAL ASSAY SYSTEMS. II. PRESERVATION OF SARCINA LUTEA FOR ANTIBIOTIC ASSAYS.
mesh_terms: D000900:Anti-Bacterial Agents; D001431:Bacteriological Techniques; D001681:Biological Assay; D003080:Cold Temperature; D005615:Freezing; D016982:Micrococcus luteus; D009584:Nitrogen; D010600:Pharmacology; D012106:Research; D012505:Sarcina
chemical_list: D000900:Anti-Bacterial Agents; D009584:Nitrogen
keywords: ANTIBIOTICS; BACTERIOLOGICAL TECHNICS; COLD; EXPERIMENTAL LAB STUDY; NITROGEN; PHARMACOLOGY; SARCINA