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Video archives
Here, we establish an online video library where a series of movies relevant to motility are available. The miscellaneous category includes bacteria, eukaryotes, and archaea, viruses, proteins, and synthetic polymers. The movies that are meaningful in the biology field will be uploaded in both Japanese and English.
For the contributors who plan to upload your video, you should keep in mind the following suggestions:
(1) the video which is relative to the object of your research
(2) the video about microbe found in the research activity of the super-science high school or biological clubs are encouraged to upload
(3) Do not forget to add the link of your video which has been published (Please make sure the copyright)
(4) If you think some videos in the old textbook are valuable to upload, please let us know.
Video List
Popular Ranking
2015.12.01
Eukaryote
A skillful hunter
Species name:Histiobalantium natans
AL-Museum AL-Museum
A ciliate seems to be resting between particles. However, its somewhat passive style of hunting is quite efficient. When it waves a transparent membrane extending from one side of its body, food particles are sucked in and transferred inside.
2015.08.06
Other
Human-Pathogen Interaction
Species name:Human-Pathogen
Stanford University Stanley Falkow
Ninety percent of the cells humans carry are microbes. Only a few of the bacteria we encounter are pathogenic and can cause disease. Pathogens possess the inherent ability to cross anatomic barriers or breach other host defenses that limit the microbes that make up our normal flora. A significant part of human evolution has gone into developing ways to thwart microbial intrusion. In turn, microbes have come up with clever ways to avoid and circumvent host defenses but human — microbe interactions is still a "Work in Progress." When we study pathogens we learn as much about ourselves as we do about them.
2015.08.06
Other
Part 2: Helicobacter pylori and Gastric Cancer
Species name:Helicobacter pylori
Stanford University Stanley Falkow
Helicobacter pylori lives in the human stomach. It causes gastritis, ulcer disease and even gastric cancer. Some H. pylori can inject a protein, CagA, into gastric epithelial cells. CagA interacts with the tight junctions that bind cells together and with signaling molecules affecting motility and proliferation. CagA is associated with ulcer disease and cancer but we don't understand how it works to favor malignancy. Not long ago in history most humans carried H. pylori ; the incidence of carriage and gastric cancer is dropping but there is evidence that this microbe also had a protective effect on human health.
2015.07.15
Molecule and Protein
Cytoskeleton and endosomes in HeLa cells
Species name:Homo sapiens
Kyoto University Yohei Katoh
Endosomal movement in HeLa cells. Upper panels: left, microtubules; right, endosomes Lower panels: left, actin filaments; right, merged image (green, microtubules; red, actin filaments; white, endosomes)
2015.07.15
Molecule and Protein
Cytoskeleton dynamics in breast cancer cells
Species name:Homo sapiens
Kyoto University Yohei Katoh
Dynamic remodeling of cytoskeleton in metastatic breast cancer cells (MDA-MB-231 cells)
2015.07.15
Molecule and Protein
Movement of endosomes by interaction with kinesin motor protein
Species name:Homo sapiens
Kyoto University Yohei Katoh
Chemically inducible dimerization technique allows the interaction between endosomes (green) and kinesin motor (red) by treatment of rapamycin. The kinesin motor delivers endosomes to the plus end of microtubules.
2015.03.17
Eukaryote
Hydra Viridis (Green Hydra) is eating a waterflea
Species name:Hydra viridis
Private Microscopist (Hobby) Dr Ralph Wagner
Hydra Viridis (Green Hydra) is eating a cyclops spec. (some sort ofwaterflea) http://www.dr-ralf-wagner.de
2014.08.28
Prokaryote
Fluorescent labeled Helicobacter pylori motility
Species name:Helicobacter pylori
Department of Molecular and Cellular Physiology, University of Cincinnati, Cincinnati, Ohio, United States of America Professor Marshall H. Montrose
The motility of wild-type H. pylori Strain SS1 was observed by tracking fluorescently labeled cells using a fast-scan confocal microscope. The cells swam in straight or arced lines at mean velocity of 25.5±0.7 µm/sec, with stopping at the frequency of 0.13±0.05 per s, and slowed at pH 5. Fluorescently labeled H. pylori was loaded into an uncoated μ-Slide chamber (ibidi) and monitored on the inverted fast scan confocal microscope (Zeiss LSM 7 LIVE), with a scan speed at 100 ms/frame.
2014.08.28
Prokaryote
Helicobacter pylori swimming of the wild type strain and straight cell mutant in broth medium
Species name:Helicobacter pylori
Molecular and Cellular Biology Graduate Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America Professor Nina R. Salama
Five second video with a frame rate of 0.1 seconds taken at 600×. The straight csd4 mutant is on the left, the wild-type on the right, although the cell morphology appear similar in this magnification. Both strains exhibit similar motility under these conditions.
2014.08.28
Prokaryote
Helicobacter pylori swimming of the wild-type and straight cell mutant in 0.5% methylcellulose
Species name:Helicobacter pylori
Molecular and Cellular Biology Graduate Program, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America Professor Nina R. Salama
Five second video with a frame rate of 0.1 seconds taken at 600×. The straight csd4 mutant is on the left, the wild-type on the right, although the cell morphology appear similar in this magnification. Both strains exhibit similar motility under these conditions.