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Tag: "migration" at biology news

Out of Africa -- Bacteria, as well

...ns has a linear correlation with the length of the migration paths taken since they were separated. "It's actua...w uncovered similar signs of historical population migration in the genetic makeup of H. pylori. However, the genetic diversity of the bacteria is larger than th...

Bats prey on nocturnally migrating songbirds

...tists ?published this week in PLoS ONE ?shows that migration at night is not without predation risk for passeri...in the air, which are particularly numerous during migration events. According to the detractors of a bird-based diet, eating feathers could thus be a classical ...

ESA launches new project to protect biodiversity

... maps. The projects will also investigate wildlife migration processes from the Galapagos Islands to Cocos Island. Finally, the project will provide a global map of dry lands based on existing global datasets to the UNCBD. The DIVERSITY project, developed under ESA's Data User Element (DUE) programme, is be...

Prehistoric origins of stomach ulcers uncovered

...ng bacteria but also offers a new way to study the migration and diversification of early humans. The international research collaboration was led by scientists from the University of Cambridge, the Max Planck Institute in Berlin, and the Hanover Medical School. The researchers compared DNA sequence patterns...

UCI scientists reconstruct migration of avian flu virus

...ince of Guangdong, and they identified many of the migration routes through which the strains spread regionally... analysis is the first to systematically track the migration of H5N1 through its evolutionary history, adding new details that identify the relative importance o...

How to steer a moving cell

...ment, could lead to a better understanding of cell migration in cancer metastasis and inflammatory disease. Th...o gain a better understanding of what directs cell migration or, in the case of cancer cells and inflammation, cause cells to migrate where they normally wouldn’...

Ecology in an era of globalization

...Guadalajara, Mexico) describe the impacts of human migration and population growth in their piece, "Migration a...d use, and conservation policy. They suggest that migration and other demographics - when combined with ecological data - present opportunities for modeling pro...

Gene expression patterns predict rapid decline in idiopathic pulmonary fibrosis patients

...and organs (morphogenesis), oxidative stress, cell migration and proliferation and genes from fibroblasts and smooth muscle cells. According to Naftali Kaminski, M.D., director of the Simmons Center and director of the Lung Translational Genomics Center, division of pulmonary, allergy and critical care med...

Surprising origin of cell's internal highways

...ion of proliferation and microtubule regulation of migration and invasion probably contribute to the therapeutic effects." Therefore, further study of this new subset of microtubules might offer insight into how the invasion of cancer cells into surrounding tissues could be halted. ...

How 'memory' T cells curb the spread of viruses throughout the body

...t). This process of lymphocyte multiplication and migration may take several days while viruses multiply and spread quicker. Sigal’s work shows the CD8 T cells can protect from viral disease without the need to migrate from the lymph nodes to the site of viral entry. “It was very difficult to imagine how ...

Massive herds of animals found to still exist in Southern Sudan

...geti,” said Fay. “This could represent the biggest migration of large mammals on earth.” Fay, Elkan and Marja...oup of three zebra moving with the white-eared kob migration in Boma National Park. The team also identified a key zone of semi-arid habitat supporting several s...

Migration alert -- How tumor cells home in on the lymphatic system

...ey don’t understand the details of how this deadly migration takes place. In the June 2007 issue of the journal...tic’s own secretions, fine tuning the tumor cells’ migration and guaranteeing that they will home in on the lymphatic. To demonstrate this new concept, the ...

Cellular message movement captured on video

...nd they hypothesize that this process enables cell migration by assembling new focal adhesion sites in the dire...e understanding of how the cell functions, both in migration and signal transduction,” said Chien. “If we can understand the details of these processes, we can n...

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