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Cytoskeletal elements in bacteria
Cytoskeletal elements in bacteria

... group found that MreB and Mbl form filamentous structures in B. subtilis cells, as revealed by immunofluorescence and GFP (green fluorescent protein) tagging to visualize the proteins [31] (Figure 1c,d). Both filaments formed helical structures underneath the cell membrane, with Mbl filaments extend ...
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... Rickettsia)) are only 0.1 to 0.2 µm in diameter diameter,, whereas larger bacteria may be many microns in length.. Most species are approximately 1 µm in length diameter and are therefore visible using the light microscope which has a resolution of 0.2 µm. ...
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... a superhighway for the delivery of systemic informational molecules (Bill Lucas, University of California, Davis) has gained considerable support from the study of movement of viruses and endogenous macromolecules. Recent work establishing that non-cell autonomous macromolecules are able to function ...
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... its benzyl guanine substrates and to remove its affinity for DNA. In mammalian cells, SNAP-tag localizes to the cytoplasm and the nucleus. 2. How does it work? The SNAP-tag is a protein tag that forms a highly stable, covalent thioether bond with fluorophores or other substituted groups when appende ...
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21. Potential of modified vaccinia Ankara (MOA) as a vaccine delivery vector for foot-and-mouth disease virus (FMDV)
21. Potential of modified vaccinia Ankara (MOA) as a vaccine delivery vector for foot-and-mouth disease virus (FMDV)

... movement of infected products or by means of emergency vaccination in free countries or mass vaccination in endemic countries. However, vaccination is not always implemented, especially in disease-free countries, due the costs associated with the ban on exports from these countries until the disease ...
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Mitosis



Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.
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