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  • Title: Tinctorial properties of spherical bodies in broth cultures of Nocardia asteroides GUH-2.
    Author: Kohbata S.
    Journal: Microbiol Immunol; 1998; 42(3):151-7. PubMed ID: 9570279.
    Abstract:
    In yeast extract-supplemented brain heart infusion (BHI) broth cultures of Nocardia asteroides GUH-2, many spherical bodies (SBs) were frequently seen nearby filamentous cells. They showed no gram-positivity when Gram stain was applied. When acridine orange stain was applied, many of them showed different green fluorescence from bright orange fluorescence of the filamentous nocardiae under ultraviolet light. Their acid-fastness appeared to depend on the presence of paraffin. Using the polymerase chain reaction (PCR) method, 16S rRNA genes were detected in SB-containing broth cultures inoculated with culture filtrates from broth cultures of the strain and identical to that of N. asteroides. These results suggest that SBs are cell wall-defective (CWD) forms which result from the spontaneous mutation of N. asteroides GUH-2.
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