Tag: "signals" at biology news
HHMI researchers Richard Axel and Linda Buck win 2004 Nobel Prize
... the sense of smell. From the olfactory bulb, odor signals
are relayed to both the brain's higher cortex, whi...nt molecules, thereby stimulating the cell to send signals
to the brain. The receptor proteins would be the key to answering two basic questions about olfacti...
How roots control plant shoots
...ew findings help show how roots also send chemical signals
that control whether or not leaves grow. How leave...led carotenoids play a role when plant roots send signals
to shoots, which include everything above ground: stems, leaves, flowers and fruits. But little has ...
Below the surface: New clues to plant signaling from the roots
...evelopment of their shoot and root structures with signals
from the environment is a major unsolved problem i...und portions of the plant, may also provide growth signals
that regulate shoot growth, but researchers are only beginning to understand the ways in which roots...
Low dose radiation evades cancer cells' protective 'radar'
...a. "Tricking cancer cells into ignoring the damage signals
that appear on its radar could succeed in making radiation more effective in wiping out the disease," says DeWeese. This research was funded by the National Cancer Institute. Research participants from Johns Hopkins include Spencer Collis, Julie Schw...
Embryonic stem cells correct congenital heart defect in mouse embryos
...s, we observed that the stem cells provided normal signals
to themselves and also to their neighbor cells to correct the organ as a whole," explained Diego Fraidenraich, Ph.D., the study's lead author. The researchers also found a relationship between the Id protein and stem cells. "We found that stem cells ...
VitalSense(R) - Wireless vital signs monitoring
... been associated with the monitor, while rejecting signals
from other sensors that may be within range. When ... Medic Mode TM the monitor will detect and record signals
from any VitalSense sensor that is within reception range. Origin VitalSense was designed at the ...
Researchers provide road map for generating B cells from stem cells
...c developmental path, preparing them to respond to signals
yet to come, and blocking off other options. "Our ... enabling the cell to respond to specific chemical signals
later on. For example, the transcription factors PU.1 and lkaros are crucial early in the process, ...
Genetic link to risky pregnancy
... During these interactions, the trophoblast sends signals
to the NK cells, which can then assist them in the...blood vessels required to sustain the fetus. The signals
delivered to the NK cells can be stimulatory or inhibitory, depending on the types of proteins expre...
Touching research: How white blood cells navigate
... of like a tiny raisin. Those projections serve as signals
that help determine where white blood cells will exit the bloodstream and fight infections. Imagine blood vessels and cells coated with patches of Velcro actually "adhesion molecules" whose stickiness can be activated or deactivated. Signals from ...
Coke versus Pepsi: It's all in the head
...ging technique, harmless magnetic fields and radio signals
are used to measure blood flow in regions of the brain, with such flow indicating brain activity levels.In the experiments, the sips were preceded by either "anonymous" cues of flashes of light or pictures of a Coke or Pepsi can. The experimental des...
NHGRI seeks next generation of sequencing technologies
...ed equipment for detection of the chemiluminescent signals
resulting in a portable and inexpensive device for...o simultaneously detect electrical and fluorescent signals
from many nanopores at one time. "$1,000 Genome" Grants NHGRI's "Revolutionary Genome Sequencing Tec...
Perceptual decision-making hub pinpointed in human brain
...red. It works by gauging the strength of competing signals
from lower brain areas specialized for recognizing...making area, as it mulls the strength of competing signals
from specialized visual processing areas, where neurons fire only to the extent that they see certai...
Researchers find protein that makes long-term memory possible
...nals, they begin to transmit the stronger electric signals
characteristic of neurons involved in memory. A comparatively small burst of electric current simulates a phenomenon thought to parallel short term memory, and is referred to as early long-term potentiation, or E-LTP. A larger burst of current is t...
Intracellular protein localization involved in new tumor progression pathway
...s released into the cytoplasm when a cell receives signals
to undergo cell death. Once in the cytoplasm, survivin inhibits enzymes called caspases which are required for apoptosis, and in doing so, blocks apoptosis. The researchers showed that by selectively targeting survivin to the mitochondria this enhanc...
Scientists identify new cause of obesity
... the hypothalamus region of the brain and receives signals
through at least two pathways about the status of ...fat reserves. If fat stores are increasing, theses signals
stimulate MC4R, triggering physiological responses that decrease appetite. If fat reserves are decre...
Scientists fear threat of second wave of 'mad cow' prion infection
...ically "mad cow" disease and vCJD, its human form; signals
that vCJD is not a disease in decline but in a period of incubation with the possibility of a global second wave. The human-to-human threat may increase with recent evidence of at least two recipients of prion-infected blood transfusions from asympto...
Study in Royal Society journal on how relationship status influences sex ratios
...nts through which chemical nutrient, intracellular signals
and the viscous body are transported and circulated. We report the evidence that the tube network is reformed as well-designed with short total length and fault tolerance, in response to locations of food sources. This implies that this unicellular o...
UF scientist: 'Brain' in a dish acts as autopilot, living computer
...tion, similar to how neurons receive and interpret signals
from each other to control our bodies. By observin...urons then analyze the data and respond by sending signals
to the plane's controls. Those signals
alter the flight path and new information is sent to the neur...
Are yeast cells bringing us a step closer in treating obesity?
...teins on the cell membrane. These proteins receive signals
from outside the cell by binding themselves with particular substances (such as hormones), which then produces a reaction by the cell to regulate processes internal or external to the cell. A number of medicines play on this cellular operation to pro...
NIH funds new bioinformatics resources at UT Southwestern
...ogen must overtake the cell, shutting down various signals
or setting up decoys in order to survive undetected. Current microorganism databases focus on gene-sequence information, said Dr. Scheuermann. Through the BioHealthBase, researchers will not only get gene-sequence information, but will also have acc...
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