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Ventricaria ventricosa (previously called Valonia ventricosa) is not exactly a single cell. It has a coenocytic structure with multiple nuclei and chloroplasts. As Jasand Pruski correctly guessed the organism possesses a large central vacuole which is multilobular in structure (lobules radiating from a central spheroid region). The entire cell contains ...


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The Streptococci are a part of the normal human flora. The streptococci are widely distributed in nature and frequently form part of the normal human flora (seeTable 29-1). Approximately 5-15% of humans carry S pyogenes or S agalactiae in the nasopharynx. Please see:http://www.ncbi.nlm.nih.gov/books/NBK7611/#!po=51.4706 for more details on ...


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The gram staining relies on the differences in the bacterial membranes. The gram positive bacteria have a thick peptidoglycan layer on top of the cell membrane, the gram negative bacteria have a lipid layer on the outside followed by a thin peptidoglycan layer and then the cell membrane. See the image for clarification (from here): Crytall violet ...


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Plasmids do have the advantage that they replicate independently of the cells chromosome and that they can be transferred between different bacteria. This spreads the gene encoded by the plasmid to other bacteria, which then can also survive. Think about antibiotic resistance. Bacteria which have a plasmid which allows protection against the antibiotic will ...


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You can see this protocol for Wolbachia isolation: See this protocol for infecting cell lines with Wolbachia. In this study the authors have established a cell line from a Wolbachia infected tissue of Aedes albopictus. You can have a look at that too.


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You will definitely get satellite colonies. Ampicillin breaks down after about a day, especially exposed to light. Kan, keeps pretty well at room temp, but that does you no good :)



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