title: Bacteriologic survey of lyophilized chemical quality control materials.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D004355:Drug Stability; D005612:Freeze Drying; D006769:Hospitals, General; D008145:Louisiana; D008837:Micrococcus / Q000302:isolation & purification; D004364:Pharmaceutical Preparations / Q000592:standards*; D011786:Quality Control; D013291:Streptococcus / Q000302:isolation & purification; D013997:Time Factors
chemical_list: D004364:Pharmaceutical Preparations