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It is time that we killed off
Posted on: May 21, 2017 at 10:48:51 CT
Silas MU
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scientific research:
Kari Alitalo had studied lymphatic vessels for more than two decades. So he knew that this network, which carries immune cells throughout the body and removes waste and toxins, didn’t extend into the brain: This had been accepted wisdom for more than 300 years. “Nobody questioned that it stopped at the brain,” says Alitalo, a scientist at the University of Helsinki in Finland.
Three years ago, Alitalo wanted to develop a more precise map of the lymphatic system. To do this, he used genetically modified mice whose lymphatic vessels glowed when illuminated by a particular wavelength of light. (The mice had been given a gene from a species of glowing jellyfish.)
When viewing the modified mice under the light, Aleksanteri Aspelund, a medical student in Alitalo’s laboratory, saw something unexpected: The heads of the mice glowed. At first, he suspected that there was something wrong — with the animals, the lighting or the measuring equipment. But when Alitalo and Aspelund repeated the experiment, they got the same result. It seemed that the lymphatic vessels extended to the brain after all.
Kari Alitalo had studied lymphatic vessels for more than two decades. So he knew that this network, which carries immune cells throughout the body and removes waste and toxins, didn’t extend into the brain: This had been accepted wisdom for more than 300 years. “Nobody questioned that it stopped at the brain,” says Alitalo, a scientist at the University of Helsinki in Finland.
Three years ago, Alitalo wanted to develop a more precise map of the lymphatic system. To do this, he used genetically modified mice whose lymphatic vessels glowed when illuminated by a particular wavelength of light. (The mice had been given a gene from a species of glowing jellyfish.)
When viewing the modified mice under the light, Aleksanteri Aspelund, a medical student in Alitalo’s laboratory, saw something unexpected: The heads of the mice glowed. At first, he suspected that there was something wrong — with the animals, the lighting or the measuring equipment. But when Alitalo and Aspelund repeated the experiment, they got the same result. It seemed that the lymphatic vessels extended to the brain after all.
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It is time that we killed off - Silas MU - 5/21 10:48:51
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