Foreign media: Researchers may have found the cause of mad cow disease.

Original title: Foreign media: Researchers may have found the cause of mad cow disease
Foreign media said on December 18, researchers may have found the cause of
drational cow disease
and stressed the need to continue to take
prosponsional
measures to prevent the recurrence of the disease.
first appeared in britain in the 1980s, when it was known as "mad cow disease," AFP reported on December 18.
there are many inferences about the cause of the disease, but so far, no inferences have been proven to be accurate.
the disease involves a protein misfolding called prion, sheep itching and human-infected kerja disease.
researchers injected mice with a variant of the amniotic itch virus, which is genetically manipulated to produce bovine-based prions.
The findings, published in the journal Proceedings of the National Academy of Sciences, say in an article that they can prove not only that the disease can be switched from one species to another, but also that genetically manipulated mice develop mad cow disease.
Olivier Andreoletti, a researcher at France's National Institute of Agomics who led the study, said gm mice are "a good model for understanding what happens if a cow is exposed to prions."
the French National Institute of Agronomy said the data were the first to provide an explanation for the emergence of mad cow disease in the UK in the 1980s.
the National Institute of Agomics said the findings are illustrated by the presence of a large number of typical mad cow disease viruses in the natural form of sheep itching variant prion injected into mice.
the disease then spread to "Europe, North America and many other countries" where cattle were infected. Feed made from areas such as livestock guts in these countries exacerbates the spread of the virus. Exposure to infected bovine products causes human infection with variants of kerya disease.
Since the 1990s, Europe has taken a number of steps to curb the spread of the disease, including banning the use of animal-added feed, strengthening surveillance of cross-infections and destroying the organizations most at risk of infection, which ultimately bring the spread under control.
AndreOletti says the measures are still being implemented - but they are costly, leading some to call for them to be scrapped and to restore the recycling of high-quality proteins rather than throw them away in vain, which may be an alternative to imported soybeans.
said such an approach could lead to a return to mad cow disease.
.