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Tag: "intricate" at biology news

Needling Chromosomes Reveals Cell Division Secret

...surgical skills have added a piece to thelarge and intricate puzzle of how one cell divides into two -- aprocess fundamental to all organisms.In the Dec. 14, 2004, issue of Current Biology, Leocadia Paliulis andBruce Nicklas report their progress in understanding how the pairs ofchromosomes in each cell manage...

Study reveals new technique for fingerprinting environmental samples

...elative abundance as gleaned from EGTs reflect the intricate physical and biochemical details of a given environment without having to know the actual identities of the resident microbes. This finding is crucial for studies of microbes in the wild since the sheer number of different organisms present in nearly...

Cerebral navigation: How do nerve fibers know what direction to grow in?

...rs (axons) that connect to other nerve cells in an intricate network. Growth cones, structures in the tips of growing axons, are responsible for steering axons in the right direction, guided by a complex set of signals from cells they encounter along the way. Some signals lure the axons to extend and grow in a...

Protein synthesis can be controlled by light, opening way for new scientific, medical applications

...at can be turned on with light, could lead to more intricate studies of such important but poorly understood processes, such as protein synthesis in nerve synapses. The research was published today in the journal Chemistry & Biology. Coauthors on the paper are Schuman, Michael Goard, Girish Aakalu, Carlo ...

Mapping neuron connections in the brain

...ns with neighboring neurons. Making sense of these intricate connections is essential to understanding brain function, and the task is a monumental one. Thanks to a new theoretical approach to mapping neuron connectivity published in PLoS Computational Biology by Bagrat Amirikian, a researcher at the Departme...

Researchers develop promising new gene network analysis method

...of Sciences. "Genes influence one another in many intricate ways," said Leon Cooper, professor of physics and neuroscience and director of the Institute for Brain and Neural Systems at Brown. "What we need is a map, or network, of these links. What we've identified in this project is a more effective method f...

Brown-Harvard team solves mobile DNA's surgical sleight-of-hand

... what do the surgeons look like that conduct these intricate snip-and-solder procedures? While scientists have studied site-specific recombination for about 30 years, much remains a mystery. In the current issue of Nature, a Brown University and Harvard Medical School team reveals the crystal structure of λ-i...

Self-assembled DNA buckyballs for drug delivery

...lecules were able to self-organize to form such an intricate and complex structure is still an open question, the researchers say. They are seeking collaborators to solve the puzzle. Luo and Ph.D. graduate students Soong Ho Um, Sang Yeon Kwon and Jong Bum Lee described DNA buckyballs in an invited talk title...

Digging in the dirt for life's biochemical foundations

...parts of the world, such as China. Eventually, an intricate knowledge of the nitrogen cycle might lead to more efficient use of fertilizers, more productive output on low-input and organic farming operations, and improved ability to stanch the effects of acid rain on natural ecosystems, Shachar-Hill says. "T...

'Underground' tunnels discovered as means for communication between immune system cells

...nd human cells. "It's one thing to find that this intricate physical network exists but quite astonishing to learn that immune system cells are using it to relay molecular signals to one another," said Dr. Watkins, professor and vice chair, department of cell biology and physiology, and director of the Center...

Computer modeling reveals hidden conversations within cells

... that a computational approach could represent the intricate mechanisms through which cells respond to outside ...f the proteins' activity that allows them to exert intricate control over the behavior of a cell. The computer model reveals the hidden conversations in the cel...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

... sound." Thus, in essence, the entire brain is an intricate interval timing machine, in which individual struc...face the daunting process of trying to monitor the intricate swirling of neural activity throughout the entire brain, said Meck. "Looking at only one place in t...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

Delving ever deeper into the intricate architecture of the brain, researchers at The Salk Institute have now described how two different types of nerve cells, called neurons, work together in tiny sub-networks to pass on just the right amount and the right kind of sensory information. Th...

Penn Surgeons Use Completely Robotic Surgery to Successfully Treat Prostate Cancer

...uments, the surgeon can perform extremely precise, intricate movements during the procedure. For example, if the surgeon’s hand moves five centimeters, he/she can scale the robotic hand to move only one centimeter. Robotic technology also offers a number of advantages after surgery. Because lap...

Scientists learn to predict protein-stabilizing ability of small molecules

...uments, the surgeon can perform extremely precise, intricate movements during the procedure. For example, if the surgeon’s hand moves five centimeters, he/she can scale the robotic hand to move only one centimeter. Robotic technology also offers a number of advantages after surgery. Because lap...

How the neuron sprouts its branches

...ew insights into how neurons control growth of the intricate tracery of branches called dendrites that enable them to connect with their neighbors. Dendritic connections are the basic receiving stations by which neurons form the signaling networks that constitute the brain's circuitry. Such basic insights int...

'Computer-chemistry' yields new insight into a puzzle of cell division

...entified the likely way two key enzymes dock in an intricate three-dimensional puzzle-fit to regulate cell division. Solving the docking puzzle could lead to anticancer drugs to block the runaway cell division behind some cancers, said the researchers. Significantly, their insights arose not just from meticu...

MicroRNA may have fail-safe role in limb development

...his genetic material is suspected to be part of an intricate mechanism that helps repress about one-third of our 25,000 genes. It has been linked to diabetes, hepatitis C, leukemia, lymphoma and breast cancer. But only now have microRNAs been connected to actual growth processes. "We found miR 196 expressed ...

Marsupial genome reveals insights into mammalian evolution

...omes are also helping us to understand how our own intricate immune system evolved from the relatively simple immune system seen in lower vertebrates such as birds and fish," says Belov. "Interest in marsupial and monotreme genomes comes from their important positions in vertebrate evolution," says Belov. (M...

A real time look at interactions between RNA and proteins

...inding proteins, but also observe–in real-time–the intricate activities of these special molecules that make them key players in managing some of the cell's most basic functions. Researchers at the University of Pennsylvania School of Medicine who developed the new technology see this advance as one of the nex...

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