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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
2016.07.15
Eukaryote
Gliding amoeba
Species name:Testate Amoeba and Amoeba
AL-Museum AL-Museum
An amoeba is gliding smoothly across the glass slide under the microscope. The rim of its body is transparent, but the center of its body is filled with food and slightly rigid. Although it doesn't extend pseudopods, food particles enter its body as the amoeba moves over them. A diatom is temporalily captured, but manages to escape.
2016.02.02
Eukaryote
Trachelophyllum sp.
Species name:Trachelophyllum sp.
Bureau of Swerage, Tokyo Metropolitan Government
The size of Trachelophyllum is 40-50 μm in length. The body is long flat flask-shaped, ends round. Motile cilia are present on a cell's surface. Tts food source is mainly Protozoa.
2015.12.18
Eukaryote
Trinema sp.
Species name:Trinema sp.
Bureau Swerage, Tokyo Metropolitan Government
The size of Trinema is 30-105 μm in length. The sell is pouch-shaped, ends round, and scales egularly scattered. The color near the transparency. It rarely moves.
2015.12.01
Eukaryote
Testate amoeba
Species name:Testate Amoeba
AL-Museum AL-Museum
This testate amoeba has contracted its pseudopods inside its shell and remains still.
2015.07.29
Other
Part 2: Leishmania spp and Leishmaniasis
Species name:Trypanosoma cruzi
The University of Maryland Norma Andrews
In the second part of this lecture, I will present background material on Leishmania, the intracellular protozoan parasites responsible for severe human pathology in several parts of the world. I will discuss the main disease forms, the history of identification of the causative agent and form of transmission, and recent discoveries that established important concepts in our understanding of this increasingly serious infectious disease. See more at http://www.ibioseminars.org
2015.07.29
Other
Part 3: Strategies for Cell Invasion and Intracellular Survival
Species name:Trypanosoma cruzi
The University of Maryland Norma Andrews
In the third part of this lecture, I will discuss current work from our laboratory on mechanisms used by the intracellular parasites Trypanosoma cruzi and Leishmania to interact with mammalian cells. In addition to clarifying specific molecular strategies used by these parasites to infect and survive within host cells, these studies also led, in some instances, to unexpected insights on novel pathways regulating mammalian cell function. See more at http://www.ibioseminars.org
2015.07.28
Other
Part 1: Trypanosoma cruzi and Chagas’ Disease
Species name:Trypanosoma cruzi
The University of Maryland Norma Andrews
Lecture overview: Trypanosoma cruzi and Leishmania are closely related intracellular protozoan parasites that cause serious diseases throughout the world. In the first part of this lecture, I will present background material on the biology of Trypanosoma cruzi and the history of its discovery as an important agent of human disease in Latin America. I will also discuss the main characteristics of the disease, and the current efforts to stop human transmission.
2015.03.17
Eukaryote
Water bear (Tardigrade) meets Paramecium
Species name:Tardigrade
Private Microscopist (Hobby) Dr Ralph Wagner
This video is showing the meeting between a water bear and Paramecium bursaria. http://www.dr-ralf-wagner.de
2015.03.16
Eukaryote
Trypanosoma brucei bloodstream form
Species name:Trypanosoma brucei
Institute of Cell Biology, University of Bern, Switzerland Prof. Torsten Ochsenreiter
Trypanosoma brucei (Mitat1.1) is a single celled protozoan parasite that causes Human african trypanomiasis and Nagana in cattle. The movie is in slow motion the cells actually swim much faster. Images were captured by Dr. Torsten Ochsenreiter using a Zeiss Cell Observer Microscope (63x DIC objective) at the University of Georgia, Athens, USA.
2014.09.15
Eukaryote
Pollen tube attraction by the synergid cell
Species name:Torenia fournieri
ITbM, Nagoya Univ Tetsuya Higashiyama
In the evolution of flowering plants, genes necessary for flagella formation including flagellar dyneins were lost. Non-motile sperm cells of flowering plants are conveyed by a tip-growing haploid cell, the pollen tube. The sperm cell is enclosed by an endocytic membrane of the pollen tube cell and delivered to female gametes rapidly without much water for swimming. How does the pollen tube precisely arrive at an egg-containing tissue? Pollen tube attractants had been searched for more than 140 years. The attractants were finally identified in a unique plant species, Torenia, which has a protruding egg-containing tissue. Pollen tube attraction can be directly observed in Torenia as shown in this movie. Two synergid cells on the side of the egg cell were shown to be the source of the attraction signal. Finally, two cysteine-rich peptides named LUREs were identified as true pollen tube attractants.