Tag: "tubes" at biology news
U-M scientists see ubiquitin-modified proteins in living cells
...ellular processes that we could only study in test tubes
or indirectly before." In a paper published online this week in the early edition of the Proceedings of the National Academy of Sciences, Kerppola and Deyu Fang, M.D., Ph.D., a U-M research investigator, describe the first use of a technology call...
Mitochondria findings may help beat wide range of disease
...ad been removed from cells, observing them in test tubes
using both light and electron microscopy. This cell-free approach allowed researchers a first-ever glimpse into the sequence of events underlying outer and inner membrane fusion. What they discovered -- that mitochondria removed from their host-cel...
Laboratory test of evolutionary theory confirms importance of links between populations
...dynamics of bacteria and viruses in bubbling glass tubes
have confirmed an evolutionary theory of central i...nt levels in a series of chemostats--glass culture tubes
that provide nutrients and oxygen and siphon off wastes. In one set of chemostats the communities re...
Researchers find protein that makes long-term memory possible
... However, deciphering a chemical reaction in test tubes
does not prove that the same reaction occurs naturally in the brain or that the reaction underlies the formation of long-term memory. "In the Science article, we describe a series of experiments showing that the chemical reaction that gen...
In a tiny squid, bacterial toxin governs organ development
...n the case of whooping cough, and in the fallopian tubes
in the case of gonorrhea. When the squid are born, they are about half the size of a grain of rice, and they must acquire the toxin-producing bacteria from their ocean environment. Specialized features on the surface of the squid's nascen...
Dinosaurs in bullet-proof vests
... bones dissolve and are replaced by numerous small tubes
of bone known as osteons. This reduces the stability of the bones and is one cause of the well-known phenomenon of brittle bones among the elderly. Torsten Scheyer explains, 'Ankylosauruses have these osteons, too, but in contrast to humans these are...
Not finding life? Dig deeper.
...ed." The geoscientists brought their test tubes
full of desert soil back to Maier's lab, where her team wetted the soil samples with sterile water, let them sit for 10 days, and then grew bacteria from them. "We brought 'em back alive, it turns out," Betancourt said. Maier ...
Diamonds are a urologist's best friend
...discharge their urine. However, sometimes the thin tubes
are coated after as little as a few days with an infectious crust of bacteria and crystals, with unpleasant consequences: one third of all infections which patients contract in hospitals originate as the result of catheterisation of the lower urinar...
Purdue researchers align nanotubes to improve artificial joints
...improved by making the implants out of tiny carbon tubes
and filaments that are all aligned in the same dir... channels. Because the channels are so narrow, the tubes
can only fit lengthwise, causing them to become aligned. The grids can then be removed, leaving behi...
University of Texas at Austin researchers identify drug-tolerance mechanism in flies
...ents. Initially, flies placed inside BA-laden test tubes
began moving quickly and climbing the walls. Within minutes, this excited phase ended and they started falling off the walls and stumbling, before passing out. "They start tripping more and taking longer and longer to get up, basically acting like a...
'Jumping gene' helps explain immune system's abilities
...ak Mitra, Ph.D., discovered in experiments in test tubes
and with E. coli bacteria. Although this loop distances Hermes from its well-studied cousins, the Hermes protein still has an important family trait, the researchers report. Colleagues at the National Institutes of Health found that a few key buildin...
Quantum dots research leads to new knowledge about protein binding in plants
...rotein (chemocyanin) in guiding sperm-laden pollen tubes
to the eggs found in ovules. Applying nanoparticl...nderstanding of the interaction of SCA with pollen tubes
could help with successful plant breeding"....
Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers
...ent." Insects take in oxygen through spiracles -- tubes
connected to openings in their sides. In their study, the researchers inserted fine tubes
into the spiracles of a moth to measure not only how much carbon dioxide the moth released but also ...
Mechanical tension helps shape lung development
...n internal scaffolding of crisscrossing fibers and tubes
that generates tensional forces like those in muscle. Through these tensed connections, cells can "feel" mechanical forces that push and pull on the tissue they are in. If they feel a stretch, cells will begin to proliferate; if they feel compressed...
Worms, slugs inspire robotic devices
...surrounded by muscle-like actuators in the form of tubes
or rings. One of these tubes
contains a mouth that opens and closes. The ball pushes forward, opens its mouth and grasps at the ...
Harnessing microbes, one by one, to build a better nanoworld
...ized components, such as the microscopic wires and tubes
that comprise the raw materials of nanotechnology. "We spend a lot of time making tiny little nanowires and things of that sort, and then we try to direct them in place, but it is very hard," says Hamers. "However, bacteria and other biological syste...
NJIT chemists modify carbon nanotubes using microwaves
...carbon atoms connected single-file in a tube. The tubes
are closed at either end by hemispherical structur...ght before our eyes." Once the tiny, microscopic tubes
are chemically altered, they become soluble in common solvents like water and alcohol, and new kinds...
Where bacteria get their genes
... Bacteria can also make contact by tiny connection tubes
through which they exchange pieces of DNA. They can also take up genetic material from the environment. Ochman thinks the team's findings will stir new research in bacterial evolution. "It should be exciting to see whether gene transfer has been so w...
A little stress gives beneficial oomph! to immune system
... study were restrained in clear plastic ventilated tubes
for two-and-a-half hours. These mice the stressed group could not turn around in the tube, but they could move forward and backward. This restraint created a brief spell of psychological stress, similar to the kind of stress a person anticipating o...
Strongest proof yet found for prion hypothesis
...ns taken from infected hamsters and placed in test tubes
containing healthy brain proteins. When the healthy proteins had been largely transformed into prions, the samples were diluted over and over again and the process repeated, until the only remaining prions were those that had been generated in the te...
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