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Phage typing of mycobacteria using paper discs. 1978

P R Gangadharam, and C S Simmons, and C E Stager

The suitability of phage-impregnated paper discs for the phage typing of mycobacteria was studied. The relevance of the routine test dilution, the volume of the phage used, the mode of incubation, and the effect of prolonged storage of phage-impregnated paper discs were considered. By using paper discs, each impregnated with one of 5 different mycobacteriophages (BG1, BK1, G37, CRI-3 and LG) that lyse Mycobacterium smegmatis 607B, it was determined that 100 x the routine test dilution in a volume of at least 20 microliter was required for phage lysis. Soaked and dried paper discs produced larger areas of lysis than those with 20-microliter volumes. Soaked discs were found to be stable even after storage for 8 weeks at 4 degrees C.

UI MeSH Term Description Entries
D009160 Mycobacteriophages Viruses whose host is one or more Mycobacterium species. They include both temperate and virulent types. Mycobacteriophage
D009161 Mycobacterium A genus of gram-positive, aerobic bacteria. Most species are free-living in soil and water, but the major habitat for some is the diseased tissue of warm-blooded hosts. Mycobacteria
D010209 Paper Thin sheets made from wood pulp and other fibrous substances, used for writing, drawing, printing, image duplication or wrapping. Papers
D001431 Bacteriological Techniques Techniques used in studying bacteria. Bacteriologic Technic,Bacteriologic Technics,Bacteriologic Techniques,Bacteriological Technique,Technic, Bacteriological,Technics, Bacteriological,Technique, Bacteriological,Techniques, Bacteriological,Bacteriologic Technique,Bacteriological Technic,Bacteriological Technics,Technic, Bacteriologic,Technics, Bacteriologic,Technique, Bacteriologic,Techniques, Bacteriologic
D001434 Bacteriophage Typing A technique of bacterial typing which differentiates between bacteria or strains of bacteria by their susceptibility to one or more bacteriophages. Phage Typing,Typing, Bacteriophage,Typing, Phage

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