measuring 2 2

Tag: "measuring" at biology news

Using computers and DNA to count bacteria

...bacterial DNA in a soil sample, blending them, and measuring the time it takes for the correct halves to properly reconnect. As often happens at Los Alamos, where thousands of scientists from every imaginable discipline are gathered, the researchers form a multidisciplinary team, with Gans (biophysicist), Wol...

Comparison of Cocaine, Methamphetamine ‘Highs?Finds Differences

...bacterial DNA in a soil sample, blending them, and measuring the time it takes for the correct halves to properly reconnect. As often happens at Los Alamos, where thousands of scientists from every imaginable discipline are gathered, the researchers form a multidisciplinary team, with Gans (biophysicist), Wol...

Unexpected lock and key mechanism found for the assembly of tumor blood vessels

...ucting tests with breast cancer patients to see if measuring the activity of the receptor, or "lock," called integrin, could help diagnose the cancer earlier. They are also currently planning cancer clinical trials with an FDA approved drug directed against the integrin. Angiogenesis has been an intensely stu...

Hepatitis C responds best to combo of ribavirin and interferon, study concludes

...help slow virus replication. The researchers were measuring failure to respond adequately to treatment under each course of treatment. In tests for presence of the virus among those who had never been treated for the disease, 83 percent of those on interferon did not respond after six months, compared to 58 ...

Measuring hidden parasites in falciparum malaria

A new technique for measuring hidden malaria parasites and assessing severity of...d total amount of malaria parasites in the body by measuring a protein--Histidine-rich protein 2 (PfHRP2)--which is liberated into the blood when malaria-infecte...

HIV Therapy Greatly Extends Life of Key T Cells, Scientists Find

...ks and months following the deuterium infusion and measuring the amount of deuterium remaining in the CD4+ T cell DNA at each time point, the researchers could count how many new cells were made and how long they lived. The scientists found a marked increase in the numbers of newly made CD4+ cells in all the ...

New markers of climate change

...fessor Howard Griffiths' lab in Cambridge has been measuring the levels of two stable isotopes, 13C and 18O in the organic material and leaf-water of the plants. These isotopes accumulate in the plant over time and are indicators of photosynthesis and water evaporation, respectively. Because the plants are sub...

Computers close in on protein structure prediction

...ow, scientists determine structures exclusively by measuring the atomic characteristics of proteins in the lab. In contrast, "in this case, we never touched a test tube," Baker said. "We gave it to a computer and said, 'go.'" In the study, a sophisticated computer program folded 17 short strings of amino acid...

Life's origins were easier than was thought

... could contain more than 100 different genes, each measuring 70 bases in length (bases are the units that const...dify the information), or more than 70 genes, each measuring 100 bases. It is worth remembering that tRNAs (essential molecules for the synthesis of proteins) ar...

Long-sought flower-inducing molecule found

...ther they are growing in spring, summer or fall by measuring the length of the day. One could also show that plants use their leaves to sense the length of the day. By grafting leaves from plants that had been induced to flower on non-induced plants one could show that the induced leaves produce a substance th...

Locusts' built-in 'surface analysis' ability directs them to fly overland

...e able to swarm for great distances and in numbers measuring in the millions. During the locust invasion of November 2004 in Israel, it appeared that a swarm came in an easterly direction over Sinai up to the Gulf of Eilat, then turned northward without crossing the water. Only when the swarm reached the north...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...ns range from the imaging of cell interiors to the measuring of lithographic structures in microchip manufacturing, and substantial improvements in the quantification of the reaction kinetics of organic molecules (Phys. Rev. Lett., April 15 and Phys. Rev. Lett. May 6). Ever since its invention in the 17th cen...

Breast tumors in mice eradicated using cancer vaccine

... growing out to 100 days, at which time we stopped measuring since this is a long time for experiments of this type," says Paterson. "The tumors stopped growing or went completely away." The researchers published their findings in the September 15 issue of the Journal of Immunology. "The problem that we encou...

Environment, not genes, key in family relationships

...ent/parent relationships into nine variables - six measuring adolescent adjustment and three assessing family relationships, and then further divided them into genetic and environmental components to explore the connections between them. The adolescent variables were antisocial behavior, autonomy, classroom ...

Making plant cells work like miniature factories

...ory on the ISU campus. Mass spectrometry works by measuring the mass of individual ions ?molecules that have been electrically charged. Plant material is ionized into a gas, sorted in an analyzer chamber according to the mass-to-charge ratios, and collected by an ion detector. The detector converts ion flux i...

NHGRI expands effort to revolutionize sequencing technologies

...le to oscillate back and forth between electrodes, measuring the electrical signal associated with each specific base. Stephen W. Turner, Ph.D., Nanofluidics, Menlo Park, Calif. $6.6 million (3 years) "Real-Time Multiplex Single-Molecule DNA Sequencing" This group will leverage their "zero-mode waveguide" te...

Defective Gene Linked to Two Inherited Immune Deficiencies

...ID). Currently, doctors diagnose the conditions by measuring immunoglobulin levels and excluding other causes for lowered immunoglobulin levels; there are no specific tests to detect the two disorders. A deficiency of IgA ?an important type of infection-fighting antibody found in tears, saliva and other secre...

Agreement will speed research on microbicides for women

...ID). Currently, doctors diagnose the conditions by measuring immunoglobulin levels and excluding other causes for lowered immunoglobulin levels; there are no specific tests to detect the two disorders. A deficiency of IgA ?an important type of infection-fighting antibody found in tears, saliva and other secre...

Biologists Crack Genetic Code for Specialized Spider Silk

...ID). Currently, doctors diagnose the conditions by measuring immunoglobulin levels and excluding other causes for lowered immunoglobulin levels; there are no specific tests to detect the two disorders. A deficiency of IgA ?an important type of infection-fighting antibody found in tears, saliva and other secre...

Costly breeding programs for endangered species pay off

...ounting the number of eggs the female laid, and by measuring the number of eggs that hatched. In the MAI breeding scheme, brothers and sisters were never allowed to mate and were instead paired only with offspring from other breeding pairs. In the alternate breeding scheme, the females were allowed to contrib...

1 2 3 4 5 6 7 8