Research carried out in the Netherlands has revealed that the genetic background of cattle apparently determines how quickly and effectively they acquire immunity to infections from gastrointestinal worms. Such infections cause considerable economic losses in the beef farming industry. During her doctoral research, Kirezi Kanobana investigated how cattle rid themselves of worms and prevent new infections.
Kanobana used an infection model in which, based on their genetic background, animals exhibited varying degrees of resistance to gastrointestinal worms. Broadly speaking there are three groups of animals. Two percent of the animals are naturally immune to a first infection. Another group reacts to the first infection with an effective immune response. In the event of a second infection these animals are protected. A third group is highly sensitive for infection and scarcely acquires any immunity even after repeated infections.
The researcher distinguished the three groups of animals by using two types of measurement. Three-month-old calves were infected with 100,000 larvae of a small-intestinal worm. After the infection an initial distinction was made on the basis of parasitological variables such as worm counts and the detection of eggs in the animals’ excreta. Secondly, immunological parameters were used to confirm the three groups of animals.
Sonja Jacobs | alfa
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
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With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
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An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
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Transistors based on carbon nanostructures: what sounds like a futuristic dream could be reality in just a few years' time. An international research team working with Empa has now succeeded in producing nanotransistors from graphene ribbons that are only a few atoms wide, as reported in the current issue of the trade journal "Nature Communications."
Graphene ribbons that are only a few atoms wide, so-called graphene nanoribbons, have special electrical properties that make them promising candidates for the...
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08.12.2017 | Information Technology