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Tag: "student" at biology news

McGill researchers shed light on formation of carcinogen in food

...ill researchers Dr. Varoujan Yaylayan and graduate student Carolina Perez Locas explains the presence of this chemical in a wide range of food products. The study, published in the October, 2004 issue of Journal of Agricultural and Food Chemistry, shows how food-based amino acids and sugars break down when ...

Researchers identify protein crucial for survival of Lyme-disease bacterium

..." UT Southwestern molecular microbiology graduate student Andrew Revel, a lead author of the study, found the bptA gene by screening a number of candidate genes he thought might be affecting the survivability of Bb within its hosts. The research team had hypothesized that the elimination of the gene would s...

Birds brains reveal source of songs

...postdoctoral fellow Bence P. Ölveczky and graduate student Aaron Andalman. "We said, this young bird is being creative, exploring many different sounds through trial and error. We hypothesized that the AFP is the source of this creativity, generating the variations, rather than comparing them." To test this...

Chemicals in tattoo inks need closer scrutiny

...ays Haley Finley-Jones, an undergraduate chemistry student and lead author of the study. "With the growing popularity of tattoos among young people, it is vital that we develop a better understanding of this form of self expression." The new research ?a joint effort between Finley-Jones and Leslie Wagner as...

Defenseless plants arm themselves with metals

...this research with John Freeman, a former graduate student now at the University of Colorado, Fort Collins. Graduate students Daniel Garcia and Amber Hopf and postdoctoral scientist Donggium Kim at Purdue's Center for Plant Environmental Stress Physiology also participated in this research. The National Scie...

Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells

...th ALL," said Chihaya Imai, M.D., the postdoctoral student who did most of the work on this project. ...

Nano-bumps could help repair clogged blood vessels

... Memphis, Tenn. The work was conducted by graduate student Saba Choundhary, Webster and Karen Haberstroh, an assistant professor of biomedical engineering. The researchers placed titanium discs possessing the nano-features into petri plates containing a suspension of endothelial cells. After one hour, the d...

Leprosy microbes lead scientists to immune discovery

... are engaged in teaching and training the 900-plus student body in a broad spectrum of disciplines crucial to the health and well being of individuals and populations around the world. Programs and projects range from the molecular biology of AIDS vaccines to the epidemiology of cancer; from risk analysis to...

Duke engineers develop new 3-D cardiac imaging probe

...is team, including biomedical engineering graduate student Chris Pua, developed the probe specifically for use in hospitals and clinics. For example, they used the outer casing of a commercially available 2-D TEE probe to house their new 3-D model. The casing design already has been tested and approved for u...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...tudent; and Dave Shriver, a University of Iowa law student ("I deal with animal harassment issues," he jokes). Equipped with amplifiers, speakers, geophones and video cameras, the research team spent a full month performing round-the-clock tests designed to see how elephant herds respond when specific calls...

Protein helps regulate the genes of embryonic stem cells

...A sequence," said Nathan D. Montgomery, a graduate student in Magnuson's laboratory and first author of the paper. This information is in the form of chemical modifications on any of four core histone proteins that group together to provide a molecular scaffold supporting the roughly 35,000 genes in the nuc...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...LA postdoctoral scholar Carla Theimer and graduate student Craig Blois solved the structure of an essential piece of this RNA. Telomerase has been extremely difficult to characterize structurally because of its size and complexity, and its low level in normal cells. "This is a unique RNA structure, with di...

Scientists discover that three overlapping signals in embryo help get the backbone right

...University of Freiburg in Germany, Spemann and his student Mangold found that as the mass of cells in the embryo started to take form, a region in the embryo - what they called the "organizer" - seemed to be the source of signals to nearby cells, telling them to form back structures. What clinched their expe...

Man-made wetland's effectiveness similar to natural marsh

...ng. Mitsch conducted the study with Daniel Fink, a student in the environmental science graduate program at Ohio State. Often called the "kidneys" of the environment, wetlands act as buffer zones between land and waterways. They also act as sinks ?wetlands filter out chemicals in water that runs off from fa...

Master gene controls healing of skin in fruit flies and mammals

...sion and cell migration." Mace, a former graduate student of biology professor William McGinnis, who led the...tes after injury," said Joseph Pearson, a graduate student working under McGinnis and a coauthor of the paper. "They are activated over many cell diameters, mo...

Conserved amino acids play both structural and mechanistic roles in sandwich-like protein

...to this question." Wittung-Stafshede and graduate student Corey Wilson analyzed the purpose of six of the eight amino acids by exchanging a nonessential amino acid for each of them and monitoring the effect on the protein structure. (For technical reasons, the other two amino acids could not be studied.) Th...

Stanford gut check shows diversity of intestinal ecosystem

...try professor Patrick Brown, MD, PhD, and graduate student Chana Palmer to develop a gene chip that can perform a microbial census on complex communities and samples. ...

Two chemicals boost immune cells' ability to fight HIV without gene therapy

...in the laboratory. Effros' team included doctoral student Steven Fauce; Beth Jamieson, Ph.D., assistant professor hematology-oncology; and Otto Yang, Ph.D., associate professor of infectious diseases, all from UCLA. ...

Mouse with designer liver has enhanced glucose tolerance, insulin response

...D., postdoctoral fellows, and Eric Zhang, graduate student in the Burnham Institute-UCSD's joint graduate training program in Molecular Pathology. Jerrold Olefsky, Ph.D. and Andrea Hevener, Ph.D. are Professor and Adjunct Associate Professor, respectively, in the Department of Medicine at the University of ...

Retrovirus struck ancestors of chimpanzees and gorillas millions of years ago, but did not affect ancestral humans

...he study's lead authors are Zhaoshi Jiang, a Ph.D. student in Eichler's lab at the UW, and Chris Yohn, a technician at Case Western Reserve University in Cleveland. ...

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