experiments 2 4

Tag: "experiments" at biology news

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

...ars, Hart, Aranson and O'Connell-Rodwell conducted experiments with captive elephants in the United States, Zimbabwe and India. Using geophones buried in the soil, the scientists were able to confirm that low-frequency rumbles and mock charges do, indeed, generate measurable seismic waves that travel along the s...

New tumor-suppressor gene discovered

...own to two genes, then performed molecular-biology experiments with them both, revealing that the defective gene ...h of tumors. The researchers then did a number of experiments to study this line of flies with the clearly defective mats gene. "With transgenic techniques, we we...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...thods involving high resolution nutrient profiles, experiments with stable isotope labeled nutrients, depth profiles of unique membrane lipids (ladder molecules), fluorescence microscopy and DNA analyses of water samples was used to proof the abundance of anammox bacteria in the Atlantic Ocean. The discovery of ...

Novel gene-silencing nanoparticles shown to inhibit Ewing's sarcoma

...no tumor growth in many animals," said Hu. Future experiments will combine the novel delivery system with small molecular anti-tumor agents, with hopes of creating a new and effective way to treat Ewing's sarcoma and other tumors in the clinic. "Clinically, Ewing's patients are treated with combination of chem...

Agilent Technologies releases probe sequence, annotation information for all its commercial gene expression microarrays

...e, release of these sequences makes the results of experiments using Agilent arrays far more valuable." This ann... using Agilent microarrays to perform thousands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expressi...

Virus-host interactions at sea effect global photosynthesis

...e, release of these sequences makes the results of experiments using Agilent arrays far more valuable." This ann... using Agilent microarrays to perform thousands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expressi...

B-15A collides with Antarctic ice tongue

...e, release of these sequences makes the results of experiments using Agilent arrays far more valuable." This ann... using Agilent microarrays to perform thousands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expressi...

UCSD research reveals mechanism involved with type of fatal epilepsy

...ease. Dixon and colleagues are currently designing experiments to test these models with the hope of gaining the necessary insights to develop potential therapies for Lafora disease. Co-authors are Matthew S. Gentry, Ph.D., and Carolyn A. Worby, Ph.D., both of the UCSD Department of Pharmacy. This research was ...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...edicted which tumors would respond to Taxol in the experiments with human breast cancer cell lines and tumor tissues of human xenograft model. "This provides solid preclinical evidence that we can use toward development of a novel device that can measure CDK activity in human tissue within several hours," Ueno ...

Rhesus monkeys can assess the visual perspective of others when competing for food

...tes have typically failed in other, noncompetitive experiments that require surmising what other individuals know...ns may bring out the primates' abilities more than experiments that don't involve competition. These latest results, however, suggest that rhesus monkeys can do m...

Unchecked DNA replication drives earliest steps toward cancer

...zonetis notes that the same techniques used in his experiments to monitor replications stress and DNA breaks could also be used as an effective diagnostic tool to identify precancerous cells. "The presence of DNA breaks in precancerous and cancer cells may turn out to be the Achilles heel of cancer," Halazoneti...

Designing vaccines by computer

...ents of 'foreign' proteins that have been shown by experiments to effectively trigger a response by the immune system. They look for common patterns in their sequences or structures and use the information to create a theoretical model of what is needed for one of these fragments to trigger an immune response. T...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

... in an electrolyte solution, a condition that past experiments didn’t attempt because of the problem of interaction between the solution and the electrodes. “Almost everything we know about charge transfer in molecules is based on measurements made with the molecules suspended in solution,?Lindsay says. “Chemis...

Scientists generate patient-specific stem cells, Science study says

...herapeutic efficacy and safety. Initial laboratory experiments showed immune system compatibility between the stem cell lines and the cells of people who supplied each line's nuclear DNA, suggesting that the patient's body might tolerate the cells after transplantation. The authors caution that work with human ...

SuperLigands - a database of ligand structures derived from the Protein Data Bank

...herapeutic efficacy and safety. Initial laboratory experiments showed immune system compatibility between the stem cell lines and the cells of people who supplied each line's nuclear DNA, suggesting that the patient's body might tolerate the cells after transplantation. The authors caution that work with human ...

Structure-building cell signals also may influence learning and memory

... to treating disease, they pave the way for future experiments on the roles played by ephrins in memory, learning, and other nerve cell functions, and potentially even in certain cancers. By inserting chicken ephrin genes into rat cells, Fumitoshi Irie, Ph.D., Professor Yu Yamaguchi, M.D., Ph.D., and their coll...

Newly Discovered 'Branding' Process Helps Immune System Cells Pick Their Fights

...esearch associate in Unanue's lab, did many of the experiments and was the lead author of the study. T cells belong to a class of immune cells known as thymic-lymphocytes, which in turn are a component of the branch of the immune system known as adaptive immunity. This branch responds to pathogens after they in...

Researchers find gene that may be at root of potato blight

...ningen University, The Netherlands. In laboratory experiments on leaves from potato plants, the scientists found that the leaves containing the R3a gene successfully resisted late blight infection when exposed to P. infestans races that carried the Avr3a gene. However, some races of P. infestans with mutations ...

A probe, not an echo

...gorithms turn into 3D images. In the first set of experiments using the HUTT system, the Marmarelis team easily located a set of small metal balls smaller than a millimeter in diameter embedded in agar medium. Many critical refinements occurred during the five-year process of development, as the team gained pr...

Engineers improve plastic's potential for use in implants by linking it to biological material

.... As a result, it could be used to extend previous experiments in Schmidt's laboratory. The experiments involve wrapping a tiny strip of plastic around damaged, cable-like extensions of nerve cells called...

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