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Tag: "tracks" at biology news

CSIRO scientists join fight to save 'Tassie devil'

...agement. “The aim is to stop the disease in it tracks and we want to bring our experience of controlling infectious diseases to the research community involved to help achieve this,” Dr Hyatt said. A chemist and Spectroscopist at CSIRO Textiles and Fibre Technology, Dr Jeff Church, is investigating...

Reconstructing the biology of extinct species: A new approach

...explains. From the visual information, the animal tracks its position relative to stationary objects such as tree trunks, branches, rocks or cliffs, or the ground. Having a stable image of the environment is especially crucial for acrobatic animals that leap, glide, or fly. To make the discovery, the ...

Surprising origin of cell's internal highways

...videotaped their growth and carefully followed the tracks back to their origin. "We show that not only the centrosome, but the Golgi also makes microtubules," Kaverina said. "And unlike centrosomal microtubules, which are radial and symmetric, these microtubules are directional." They found that micr...

How to look at dinosaur tracks

...saur tracks. The authors studied a range of larger tracks from the family of dinosaurs that includes the T. ...nvaluable impressions. “Well-preserved vertebrate tracks in the rock record can be an invaluable source of information about foot morphology, soft tissue dis...

Diminishing dinosaur steps saved by laser and laptop

... experts cannot get physically close enough to the tracks to examine them. In the years since the tracks were discovered they have been exposed to the elements, and as a result are severely weathered and e...

Amur leopard still on the brink of extinction, scientists say

...nd North Korea, were transected for the census and tracks left by the leopards in the snow were counted. Sci...s by examining the shape, size and patterns of the tracks as well as determine the direction and time of the animals' movement. In all, 35 field workers to...

Short chromosomes put cancer cells in forced rest

A Johns Hopkins team has stopped in its tracks a form of blood cancer in mice by engineering and inactivating an enzyme, telomerase, thereby shortening the ends of chromosomes, called telomeres. "Normally, when telomeres get critically short, the cell commits suicide as a means of protecting the...

Robotic whiskers can sense three-dimensional environment

...direction of the flow of a fluid, much like a seal tracks the wake of prey. ...

UCLA researchers unravel a mystery about DNA

... moving parts and their translocation on molecular tracks is of great interest to nanotechnologists at the CNSI," said Weiss, the leader of the UCLA team. "Beyond furthering the understanding of transcription regulation, the novel methods and findings of this work will aid future studies of other molecular ...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

... use along with electronic fetal monitoring, which tracks the fetal heart rate, to measure changes in fetal oxygen levels. Designers of the new technology hoped that knowing the oxygen status of the baby during labor would provide information on the health of the baby, especially when there were disturbanc...

Trotting with emus to walk with dinosaurs

One way to make sense of 165-million-year-old dino tracks may be to hang out with emus, say paleontologists ...ramie, Wyo. That makes it very hard to connect the tracks to a particular dinosaur. And of course, "We unfortunately can't go out and see walking dinosaurs to...

Targeted virus compels cancer cells to eat themselves

An engineered virus tracks down and infects the most common and deadly form of brain cancer and then kills tumor cells by forcing them to devour themselves, researchers at The University of Texas M. D. Anderson Cancer Center report this week in the Journal of the National Canc...

Researchers find that bumblebees' flower choice matters

...h has the same number of flowers on it. Then she tracks one bee at a time, calling out its exact foraging sequence by number to her undergraduate assistant, Dustin Knutowski, who charts the path. In the time she has spent working at the garden, she says, the invader plant is the heavier "bee magnet." An...

No cell walls, no new cancer cells

...n fact, we literally stopped the cell cycle in its tracks by removing SREBP1 from cells. It seems that if you don't have SREBP1 activity, you can't make lipids, and if you don't have lipids, you can't make new cells." According to Dr. Ericsson, who is also a Research Fellow of the Royal Swedish Academy o...

The shape of life: research sheds light on how cells take shape

...olds, giving cells their shape, and serve as train tracks of sorts, moving important bits like chromosomes and mitochondria around inside of cells. As microtubules multiply, they form patterns that can be seen by the naked eye. The pattern is a series of waves that look a bit like zebra stripes. How, Vall...

Light guides flight of migratory birds

...e recorded; songbirds in migratory condition leave tracks or scratches on the sides of the funnel as they attempt to take flight in the migratory direction. A problem arises, however, because funnels block the lower 20 degrees of the sky. In the only two experiments (out of 30 or so) carried out during migr...

Structure determined for p53 tumor suppressor protein as bound to DNA for anti-cancer activity

... domains of a pair of p53 proteins forming a dimer tracks to a part of the protein often mutated in cancers. This suggests that the interface between the two proteins of the dimer is likely as important for the proper functioning of the tetramer as its interface with DNA, which also depends on the interface...

Insect predation sheds light on food web recovery after the dinosaur extinction

...in between? "In modern forests, insect diversity tracks plant populations. If there are few plants, there are few insects, and that is what we expected to see and mostly found throughout the 10-million-year Paleocene. However, we looked extremely hard to test this conventional wisdom and found some shock...

Iron critical to ocean productivity, carbon uptake

...fluorescence data taken along 36,000 miles of ship tracks throughout the tropical Pacific. They now have a "fluorescence fingerprint" of which parts of the ocean are iron-stressed, as well as which parts suffer from lack of nitrogen ?another key element to ocean productivity. "Nitrogen and phosphorus are n...

ANU scientists crack DNA replication mystery

...d separation part like a snowplough. The replisome tracks along one of the DNA strands and pushes the other one off it," Professor Dixon said. In certain bacteria, a small protein called TUS binds to the last part of DNA to be copied in a way that stops the replisome when it faces in one direction, but not...

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