| 21. | It was remarkably well-preserved and had few signs of decay other than the presence of a few bacterial spores.
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| 22. | These would set off extra biochemical tests if they detected particularly minute particles with the signature of bacterial spores.
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| 23. | Bacterial spores are not part of a sexual cycle but are resistant structures used for survival under unfavourable conditions.
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| 24. | In the past, other scientists have revived bacterial spores that they speculated were up to 250 million years old.
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| 25. | At the time of launch, it was conservatively estimated there were fewer than 24, 000 bacterial spores on the craft.
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| 26. | Dipicolinic acid is a chemical compound that composes 5 % to 15 % of the dry weight of bacterial spores.
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| 27. | "To be breathed in, to cause inhalational anthrax, the bacterial spore has to be a precise size, " he said.
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| 28. | Disinfectants do not kill bacterial spores e . g ., on surgical instruments; a sterilization process is required for that.
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| 29. | Most bacterial spores are not toxic and do not cause any harm, but some bacteria that produce spores can be pathogenic.
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| 30. | But the disease can be contracted naturally; the bacterial spores can be found in soil and are often carried by livestock.
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