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Tag: "mysterious" at biology news

A human parasite with a streamlined mitochondrion

... Nevertheless, Entamoeba still contains a somewhat mysterious organelle, called a mitosome, that is evolutionarily derived from mitochondria. As reported by researchers this week, the mitosome can represent a surprisingly pared-down version of the much more sophisticated mitochondrion. In their new work on the...

Family trees of ancient bacteria reveal evolutionary moves

...ime when the Earth's atmosphere had an incredible, mysterious and inexplicable rise in oxygen, from extremely low levels to 10 percent of what it is today. There were three ?some say four ?global glaciations, and the fossil record reflects a major shift in the number of organisms metabolizing sulfur and a major...

Scientists identify new model Of NK cell development

...n natural killer (NK) cells, powerful but somewhat mysterious components of the body's immune system that are the first line of defense against cancer and infectious diseases. Scientists have believed for years that human NK cells are generated in bone marrow, but Michael Caligiuri, director of the OSU Compreh...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...cell type it eventually becomes. That process is a mysterious sequence of metabolic and genetic changes." There are, he says, metabolic similarities between stem cells and cancer cells, and researchers would like to clearly identify the differences. "Stem cells are therapeutic," says Naviaux. "How are their sp...

Plant hemoglobins: Oxygen handlers critical for nitrogen fixation

...roup of researchers reveal this week that one such mysterious plant hemoglobin serves to assist in the fixation of nitrogen in the root nodules of legumes through a process that is conceptually not unlike that undertaken by mammalian hemoglobins in facilitating oxygen transport and exchange in the blood. The m...

W.M. Keck Foundation funds study of friendly microbes

...ans will allow light to be shed on this previously mysterious interior world. Our objective is to understand how the human body functions as a carefully woven fabric of interacting species. Ultimately, such understanding promises to provide new ways of fortifying health and preventing or treating a variety of d...

UAB scientists discover the origin of a mysterious physical force

...istry at Imperial College London have studied this mysterious force in detail and have discovered where its origins lie. In the same way that a flag flutters in the direction the wind is blowing, at a microscopic level water molecules are gently attracted towards the direction in which an electric field is poi...

Jump-starting T Cells In Skin Cancer

...e impotence of these T cells is a mystery. Equally mysterious is why vaccination against tumor-specific proteins sometimes causes tumor regression without expanding large numbers of vaccine-specific killer T cells. Pierre Coulie's group studied anti-tumor T cells in patients vaccinated with a tumor antigen cal...

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