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  • Title: Scanning electron and phase-contrast microscopy of bacterial spores.
    Author: Bulla LA, St Julian G, Rhodes RA, Hesseltine CW.
    Journal: Appl Microbiol; 1969 Sep; 18(3):490-5. PubMed ID: 4907010.
    Abstract:
    The three-dimensional immages of free and intrasporangial spores produced by scanning electron microscopy show surface structures not visible by phase-contrast microscopy. Although fine surface detail is not elucidated by scanning electron microscopy, this technique does afford a definitive picture of the general shape of spores. Spores of Bacillus popilliae, B. lentimorbus, B. thuringiensis, B. alvei, B. cereus, and Sarcina ureae have varying patterns of surface ridge formation, whereas spores of B. larvae, B. subtilis, and B. licheniformis have relatively smooth surfaces.
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