Cross-section of a spore of B. subtilis.

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Presentation transcript:

Cross-section of a spore of B. subtilis. Cross-section of a spore of B. subtilis. The DNA is contained in the nucleoid (electron-light regions) within the spore core. The core is surrounded by the protective cortex and the lamellar inner spore coat and electron-dense outer spore coat. The long axis of the spore is 1.2 μm; the core area is 0.25 μm2. (The electron micrograph was kindly provided by S. Pankratz.)‏ Wayne L. Nicholson et al. Microbiol. Mol. Biol. Rev. 2000; doi:10.1128/MMBR.64.3.548-572.2000