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As one of the largest spirilla, it serves as a model for studying bacterial. spank パパ活?

The term spirillum is used generally for any of the corkscrewlike species. They have tufts of flagella at both poles and are classified in the family spirillaceae of the betaproteobacteria. Spirillum plural spirilla refers to a group of spiralshaped, gramnegative bacteria known for their distinct helical morphology and motility via flagella. As one of the largest spirilla, it serves as a model for studying bacterial.

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