A bacteria-killing virus found in the feces of some sheep could help remove the dangerous foodborne bacteria Escherichia coli O157:H7 from livestock. Researchers from Evergreen State College in Olympia, Washington present their research today at the 103rd General Meeting of the American Society for Microbiology.
"Here we report a promising new natural way of reducing pathogen concentrations in livestock. This takes advantage of bacteriophages – bacteria-killing viruses, harmless to humans and other animals, which have been used extensively as antibiotics in Eastern Europe and the former Soviet Union for over 50 years," says Michael Dyen, one of the study researchers.
Dyen and his colleagues report on a new bacteriophage (CEV1) that they isolated from the feces of sheep naturally resistant to gut colonization by E. coli O157:H7. Preliminary trials of CEV1 in the lab have shown that it can be produced easily and can efficiently infect and kill the bacteria under proper conditions. In model systems reflecting the cow/sheep gut, CEV1 completely eliminated the bacteria in 11 days.
Jim Sliwa | EurekAlert!
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A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
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A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
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Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
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23.02.2018 | Physics and Astronomy