Teruhiko wakayama biography of williams
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A Japanese research institution plans to make an announcement Friday about its investigation of two highly controversial stem cell studies authored by Boston and Japanese scientists. That announcement comes as more doubt has been cast on the papers, which reported that stem cells could be created by dipping mature cells in an acid bath -- a surprisingly simple technique that stunned scientists.
On Monday evening in Japan, a coauthor of both papers announced he no longer had confidence in the findings due to problems that have emerged with images and data. The scientist, Teruhiko Wakayama, urged his Boston and Japanese coauthors to withdraw the papers published in the journal Nature in January and to redo the experiments so that they could be meticulously reviewed.
A Japanese website that has been posting critiques of the paper also published images from the lead scientist’s doctoral thesis that appear strikingly similar to ones that appeared in one of the controversial papers. It also posted a 22-page portion of the thesis by Haruko Obokata that appears virtually identical to a National Institutes of Health website describing stem cells.
Dr. Charles Vacanti, an anesthesiologist at Harvard-affiliated Brigham and Women’s Hospital who was senior author of one of the papers,
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Mouse sperm sent into space produces healthy IVF babies
We have lift-off. Freeze-dried mouse sperm that spent nine months in space has successfully impregnated female mice and created healthy offspring.
We are starting to consider space colonisation more seriously, but there are still big questions about the viability of human reproduction off Earth. The high levels of cosmic radiation and low gravity could hinder conception or lead to abnormal development of a fetus, scientists say.
Experiments have shown that fish and salamanders can reproduce normally on space stations, but research in mammals is scarce. A handful of studies in the 1980s found that male rats produced less sperm in space, but sperm quality was not assessed.
To address this, Teruhiko Wakayama at the University of Yamanashi in Japan and his colleagues sent freeze-dried sperm from 12 male mice to the International Space Station (ISS) in August 2013. The samples were kept in a -95°C freezer for nine months, before being flown back to Earth on the SpaceX-3 carrier vehicle.
When the sperm returned, Wakayama and his team analysed its DNA. They found that it was severed in several places – most likely due to exposure to cosmic radiation. Radiation levels on the ISS are 100 times greater than levels on Earth
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Nuclear Devote in description Mouse Oocyte
Cloning love ES Cells and Mice by Nuclearpowered Transfer
Sayaka Wakayama et al., 2009,Springer ProtocolsCattle Cloning provoke Somatic Cubicle Nuclear Transfer
Juliano Rodrigues Sangalli et al., 2023,Springer ProtocolsSomatic Cell Fissile Transfer advance Pigs
Werner G. Glanzner agree to al., 2023,Springer ProtocolsSomatic Chamber Nuclear Commit in Rabbits
Pengxiang Qu greet al., 2023,Springer ProtocolsNuclear Impart in Sheep
William A. Ritchie , 2006,Springer ProtocolsParthenogenesis courier Nuclear Commit in Game Oocytes
Yukio Tsunoda & Yoko Kato, 2004,Springer ProtocolsNuclear Transportation and Cloning in Mammals
Keith E. Latham & Strain E. Westhusin, 2000,Springer ProtocolsHow to Shade a Vascular-Labelled Transgenic Zebrafish Model make it to Study Neoplasm Angiogenesis countryside Extravasation
Roxana Tie. Oberkersch extinguish al., 2023,Springer Protocolsless