Nodes in Biological News

Researchers design first model motor nerve system that's insulated and organized like the human body

... lead researcher on this project explained: "The nodes of Ranvier act like power station relays along ... or from node to node, at the electrically charged nodes of Ranvier. Nerve malfunctions, called ... along nerve cells, leading to malfunctions at the nodes of Ranvier, along with demyelination". Hickman's ...

UCLA researchers locate and image prostate cancer as it spreads to lymph nodes

... The tiny cancer metastases in the pelvic lymph nodes are very difficult to find using conventional ... spread of prostate cancer to the pelvic lymph nodes is the most reliable indicator that the patient ... able to detect PET signals only from the lymph nodes with cancer cell involvement, indicating the ...

Breast cancers behave differently before and after the age of 70

... likely they are to have cancer cells in the lymph nodes if the tumour is small, said Prof Wildiers, who ... tumours metastasise less frequently to lymph nodes with increasing age due to the decreased ... nodes. The womens risk of having positive lymph nodes decreased by 13% for every decade they aged, up ...

How molecular muscles help cells divide

... around the equator of the cell. Proteins in these nodes begin to put out a small number of filaments ... node pull on the actin filament, bringing the two nodes together. However, the researchers found that ... many episodes of attractions between pairs of nodes proceeding in parallel. Eventually ...

Lymph nodes can be key in spreading prion infectivity

... Lymph nodes can be crucial for spreading low doses of ... we cannot rule out the possibility that lymph nodes are still involved in the distribution of prions ... system - which comprises the network of lymph nodes that is part of the body's defence system - in ...

Louisiana Tech researchers investigate tracking, sensors to assist Air Force

... how to deploy thousands of small wireless sensor nodes in order to cover the area of interest, and still ... also aims to develop unmanned air vehicle sensor nodes and a wireless sensor network test bed for the ... bed currently includes static chemical sensor nodes and several ...

JCI table of contents: Aug. 16, 2007

... (IDO) and that are isolated from the lymph nodes that drain the site of the tumor. Now, ... IDO-expressing pDCs from tumor-draining lymph nodes directly activate the suppressive function of a ... immune suppression in tumor-draining lymph nodes was abrogated by treating mice with both a ...

New supercomputer to reel in answers to some of Earth's problems

... running large jobs, the amount of communication back and forth between the nodes is very different than if you have a hundred people running calculations ... be thought of as the equivalent of four personal computers. But Chinook's nodes are more like supercharged PCs: the Quad-cores give each node the ...

Rainforest rehab in every sense

... every five minutes since May 2008. Over the next two years, another 200 nodes will be installed, some of which will measure biodiversity indicators, ... develop sophisticated techniques to manage power," Mr Moore said. "Our nodes are able to stay on-line, adaptively reducing their workload, to minimise ...

New origin found for a critical immune response

... dendritic cells were thought to move from peripheral tissues into lymph nodes to stimulate T cell responses. The Duke researchers found, however, ... monocytes, a common cell type in the blood, that moved directly into lymph nodes after infection. "The result speaks to the most basic principles of ...

New MegaMatcher Accelerator Boosts Speed for High-Volume Biometric Identification and Database Duplicate Searching

... one MegaMatcher Accelerator can replace 1000 MegaMatcher 2.1 server nodes for fingerprint matching and 25 nodes when fingerprint and face multi-biometrics are used. A single MegaMatcher ...

New technique for cancer screening

... low numbers of tumor cells in the background of non-tumor cells in lymph nodes and other organs. Most importantly, because formalin fixation and paraffin ... of lymph node metastases and to detect very small tumor deposits in lymph nodes with known micrometastatic disease in a well defined cohort of prostate ...

Unexpected finding opens up new way to stop autoimmune diseases and transplant rejection

... antenna that receives signals telling T cells to leave the lymph nodes and patrol the body. When this antenna was disabled, the T cells failed to leave the lymph nodes (chemotaxis), reducing their numbers in the bloodstream. Taking this ...

Team finds breast cancer gene linked to disease spread

... 27.1 percent for patients with cancer that has traveled beyond the lymph nodes to bodily organs, according to the federal agency's statistics. In ... that breast cancer spreads first to nearby tissue and underarm lymph nodes before spreading to other parts of the body. They now believe cancer cells ...

Immune cells reveal fancy footwork

... van Helden discovered that before dendritic cells move to the lymph nodes they lose their sticky feet. This helps them to move much faster. Immature ... process. During this maturation the dendritic cells migrate to the lymph nodes to activate T cells. Suzanne van Helden studied the adhesion and migration ...

Acoustical Meeting, Nov. 10-14, 2008 in Miami, Florida

... It also has the advantage of being modular, in that additional sonar nodes can easily be added to increase area coverage. Stein and his colleagues ... that deflect sound waves. The best solution here is to add more low-cost nodes to illuminate the other side of the sound barrier. The company has begun ...

San Diego Supercomputer Center and UCSD announce 'Triton Resource'

... San Diego, and a member of the Triton definition team. "The large memory nodes will be particularly useful for carrying out certain stages of analysis in ... or group of linked computers, will be equipped with standard compute nodes but enhanced memory capability. The cluster may be configured to operate ...

New robot scouts best locations for components of undersea lab

... plans thus far, cables from two places on land will extend to five primary nodes each about the size of a large dinner table. Like underwater extension cords, the nodes will supply power to and communicate with instruments, robots and ...

Nature paper describes technique for extracting hierarchical structure of networks

... real-world networks can be understood as a hierarchy of modules, where nodes cluster together to form modules, which themselves cluster into larger ... such as the surprising heterogeneity in the number of connections some nodes have, or the prevalence of triangles in a network diagram. Their discovery ...

World's largest ocean observatory takes shape

... Canada, the world's largest and most advanced cabled ocean observatory. Using three ships and at least one ROV, the team is lowering five 13-tonne nodes and more than 400 instruments and sensors to the seafloor where they are being attached to an 800-km loop of powered fibre-optic cable laid in 2007. ...

Building the lymphatic drainage system

... these factors could help patients with lymph drainage problems including those that have suffered extensive tissue injuries, or have had lymph nodes removed as part of cancer treatment. ...

A new way to assemble cells into 3-D microtissues

... can study how systems of cells work together to produce complex organ functions. Examples include how T cells and B cells work together in the lymph nodes to mount an immune response against foreign antigens." Practical challenges remain, such as scaling up the production of tailored microtissues ...

Calculating gene and protein connections in a Parkinson's disease model

... useful for researchers. "It is a powerful approach for interpreting experimental data because it can efficiently analyze tens of thousands of nodes and interactions," says Riva, who is also a co-author on the article. "The output of ResponseNet is a sparse network connecting some of the genetic ...

Shades of 1918? New study compares avian flu with a notorious killer from the past

... dendritic cells whose job it is to phagocytize protein components from the virus and present these to T cells, either locally or at the lymph nodes that drain the lungs. Normally, through this process, specific antibodies are then produced to combat the viral infection. Tissue sampling for the ...

Plant soybean early to increase yield

... March and ending in early June. Detailed measurements of soybean yield components (pod number, seeds per pod, and seed mass), nodes, and reproductive nodes were counted by hand just before harvest. Oil and protein concentrations were determined by near-infrared reflectance spectroscopy. A recent ...

Novel technique changes lymph node biopsy, reduces radiation exposure

... with a joint appointment in chemistry in Arts & Sciences, both at Washington University in St. Louis, have used gold nanocages to map sentinel lymph nodes (SLN) in a rat noninvasively using PAT. Wang's lab is the largest PAT lab in the world credited with the invention of super-depth photoacoustic ...

Novel technique changes lymph node biopsy, reduces radiaiton exposure

... with a joint appointment in chemistry in Arts & Sciences, both at Washington University in St. Louis, have used gold nanocages to map sentinel lymph nodes (SLN) in a rat noninvasively using PAT. Wang's lab is the largest PAT lab in the world credited with the invention of super-depth photoacoustic ...

For fats, longer may not be better

... found in mouse studies; high amounts of dietary oleic acid, but not butyric acid, promoted significant absorption of LPS into the blood and lymph nodes and subsequent expression of inflammatory genes. Eckhardt and colleagues believe these findings may pave the way for future therapies for Crohn's ...

Networks of small habitat patches can preserve urban biodiversity

... is unique in the sense that they empirically test and verify an often used modelling approach where habitat fragments are seen as individual nodes in larger networks of interconnected habitat patches. According to the study, published yesterday in Ecography , sets of small habitat patches ...

Is that song sexy or just so-so?

... edition of the Journal of Comparative Neurology, expands on that research, tracking and quantifying the effects of hormones across nine different nodes of the brain's social behavior network. The research group treated female white-throated sparrows with estrogen, to mimic the levels seen during ...

Anti-tumor therapy with endoscopic ultrasound may fight cancer more safely and effectively

... real time imaging, EUS can help physicians to detect blood flow in blood vessels in and around tumors as well as detect and biopsy tumors and lymph nodes as small as 3-5 mm. This allows doctors to avoid puncturing blood vessels when sampling tissue, get the most accurate view of the cancer and know ...

Killer whales, blind bats, discriminating dolphins, mating birds

... configure and calibrate themselves for orientation, instead of relying on GPS, which is often not available in heavily shaded environment. Using many nodes can complicate matters even more, since all must be maintained individually and in sync. Girod's objective is to develop a system that does not need ...

Roadrunner supercomputer puts research at a new scale

... using commercially available hardware, including aspects of commercial game console technologies. Roadrunner has a unique hybrid design comprised of nodes containing two AMD OpteronTM dual-core processors plus four PowerXCell 8iTM processors used as computational accelerators. The accelerators are a ...

New chemotherapy combo produces side effects, but no extra efficacy, in early breast cancer patients

... of breast conservations, said Professor von Minckwitz. The overall rate of pathologic complete responses (pCRs) no cancer in the breast or lymph nodes was 29.7%. Nor did the length of treatment appear to make a statistically significant difference. What the scientists did find was that the ...

Model connects circuit theory to wildlife corridors

... in a complex circuit board. The result was what McRae calls the Isolation by Resistance model. The model represents patches of habitat as nodes in an electrical circuit and the genes of animals and plants as the current that flows between the nodes. Flow occurs across multiple pathways, ...

Innovative model connects circuit theory to wildlife corridors

... in a complex circuit board. The result was what McRae calls the Isolation by Resistance model. The model represents patches of habitat as nodes in an electrical circuit and the genes of animals and plants as the current that flows between the nodes. Flow occurs across multiple pathways, ...

PET/CT imaging proves golden for detecting cancer in children

... exams that were performed on 55 children with noncentral nervous system malignancies (30 patients had lymphomacancer that affects the bodys lymph nodes and other organs that are part of the bodys immune and blood-forming systems). PET (positron emission tomography) with CT (computed tomography) ...

New nanoparticle vaccine is more effective but less expensive

... for a while, says Hubbell. Our ideas -- to activate complement as a danger signal, and to exploit the slow interstitial flow towards the lymph nodes are completely new. But it meant that our particles had to be much smaller than anything currently being developed. No other labs have managed to ...

CU-Boulder team discovers first ancient manioc fields in Americas

... manioc stalk, or cutting, had been carefully placed in the ground with a growth "node" pointing toward the surface to generate a new bush and several nodes pointing down to generate the edible tubers and regular roots, he said. Archaeologists had suspected ancient Mayans had cultivated and consumed ...

'Western' diet linked to increased risk of colon cancer recurrence

... with both surgery and chemotherapy. Stage III colon cancer is characterized as being localized to the large bowel area with cancer cells in the lymph nodes near the tumor. The investigators found that those who most closely followed a Western diet were three-and-a-half times more likely to have colon ...