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GRAM3 - a.. exceptions 1).,sheepand horses,.

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GRAM-POSITIVE BACTERIA a.  Bacillus —these are rods that produce endospores. Most are nonpathogenic but there are  exceptions: 1)  Bacillus anthracis  causes anthrax. Although this is primarily a disease of cattle, sheep and  horses, it can be transmitted to humans. This organism is a large gram-positive rod, nonmotile  and facultatively anaerobic. Endospores are centrally located. Since endospores are highly  resistant to drying and anthrax endospores are infectious by inhalation, this organism has great  potential as an agent of biological warfare.  2)  Bacillus thuringiensis  is a microbial insect pathogen. Endospores or crystallized toxins of this  organism are used as a spray on plants. When ingested by an insect, the toxin causes paralysis of  the gut and the insect dies. In some insects the endospores germinate and bacteria contribute to  the insect’s death. Bacteria normally found associated with plant roots have been genetically 
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