Tag: "dish" at biology news

UF scientists have bionanotechnology recipe to find elusive bacteria

... have to "plate" it -- place the sample in a Petri dish and let the bacterial colonies grow for one to a few days before analysis. However, the bioconjugated nanoparticles found a single E. coli bacterium in a sample of ground beef in less than 20 minutes, from start to finish. A quicker analysis time is...

Study using robotic microscope shows how mutant Huntington's protein affects neurons

...t allows a microscope to match images in a culture dish to images it has stored and to manipulate its controls to look at the same neurons over and over again - like time-lapse photography. This allowed the investigators to follow changes in a single neuron or a group of neurons over a period of days. T...

Early life stress can inhibit development of brain-cell communication zones, UCI study finds

... this study grew the hippocampus of baby rats in a dish and administered higher doses of CRH to the cultured hippocampus, the dendrites matured poorly. In turn, the group found exuberant dendritic growth in hippocampus tissue in which CRH could not exert any effect because the CRH receptor was eliminated ...

UF scientist: 'Brain' in a dish acts as autopilot, living computer

...ken from a rat's brain and cultured inside a glass dish -- gives scientists a unique real-time window into...d a common desktop computer. "It's essentially a dish with 60 electrodes arranged in a grid at the bottom," DeMarse said. "Over that we put the living cor...

ESA's Huygens begins its final journey into the unknown

...the Cassini orbiter will reorient its main antenna dish toward Earth in order to play back the data collected by Huygens, which will be received by NASA's 70-m diameter antenna in Canberra, Australia, 67 minutes later. Three playbacks are planned, to ensure that all recorded data are safely transmitted to...

NYU biologists find new function for pacemaker neurons

...u, fly larvae were placed in the center of a Petri dish with one side dark and the other illuminated. Normal larvae exhibited the natural behavior and clustered on the dark side. However, when the larvae had their pacemaker neurons disabled, they were as blind as larvae that had their light-sensing organs...

Are IVF embryos starved of a vital ingredient?

...s of IVF or ICSI, such as growing the embryos in a dish for two to five days? Growth media have been developed by trial and error, and contain only a few amino acids and other nutrients. They have been kept simple in the hope of avoiding unanticipated effects. Yet according to Sarah Robertson's team at t...

Purdue proves concept of using nano-materials for drug discovery

...icrons wide. "You can think of it as a micro-petri dish for studying biochemical reactions," Lee said. The alumina contains pores smaller than 100 nanometers, and the total volume of the reactors varies from 1-10 nanoliters. "What's unique about this device is that the surface has nanometer-scale pores in...

UCSD researchers maintain stem cells without contaminated animal feeder layers

...rom human embryos are grown and nourished in petri dish material called feeder layers that are made with animal connective tissue, primarily mouse and calf. A recent study in Nature Medicine** by UCSD's Ajit Varki, M.D. showed that human embryonic stem cells grown in this animal-derived tissue become co...

Genetically modified natural killer immune cells attack, kill leukemia cells

...mmune system cells. They placed this sample into a dish containing a type of human leukemia cell called K562. Campana's team genetically modified the K562 cells so they carried on their surfaces many copies of two different proteins, 4-1BBL and IL-15. The genetically modified K562 cells quickly stimulated...

Researchers find promising cancer-fighting power of synthetic cell-signaling molecule

...ute. "Many agents suppress cancer cells in a Petri dish and then not in the whole animal, or have unacceptably high toxicity for normal tissues," said Georgia Tech Professor of Biology Al Merrill. "Finding that Enigmols are effective in three animal models leads us to hope these may be a new approach to ...

Stem cells from brain transformed to produce insulin at Stanford

...ght combination and sequence. The end result was a dish full of cells that could produce insulin and release it in response to sugar added to the environment. These cells don't perfectly mimic human islet cells. Kim's cells made some, but not all, proteins normally made by islet cells, and they continued ...

Researchers discover mechanism for multiplying adult stem cells

... take a liver adult stem cell and multiply it in a dish without having it form mature liver tissue. This experiment showed that when Oct4 was reactivated, the adult stem cells in those tissues continued to replicate without forming mature tissue. In a mammal's body, this type of cell behavior causes tumo...

Research on antibiotics receives historical recognition

...ming, who noted that a mold contaminant on a Petri dish culture had inhibited the growth of bacteria. Streptomycin was the third antimicrobial agent isolated under Waksman's direction at Martin Hall at Cook College, Rutgers University. Streptomycin, however, was the first agent not toxic to humans, and i...

Leprosy microbes lead scientists to immune discovery

...nown as "adaptive" immunity. Until now, laboratory dish experiments hadn't revealed that the instantaneous or "innate" immune reaction--discovered less than 10 years ago--is mounted by two differently-specialized cells. It had been thought that the initially responding cells were uniformly macrophages, eq...

U. Iowa finding speeds up immunization booster schedule

...itic cells against a specific bacterium in a petri dish and then immunizing mice with the altered dendritic cells. The UI team found that these DC vaccinations cause an accelerated production of memory T cells. "Six days after infection or conventional immunization those memory cells are not yet available...

For first time, brain cells generated in a dish

...se researchers took primitive cells, put them in a dish and watched them perform. From that, they learned vital information for clinical applications such as bone marrow transplants. Now we have a tool to do exactly the same thing." By watching the cells perform, scientists can make judgments and influenc...

Mass production of human papillomavirus could lead to gains against cervical cancer

...a thousand times more infectious virus per culture dish than they could using conventional methods. Resear...a thousand times more infectious virus per culture dish and takes only two days, he said."With this new system of mass-producing packaged, replicating virio...

Discarded placentas deliver researchers promising cells similar to embryonic stem cells

...hoosing to spread out at the bottom of the culture dish thereby giving those cells just above them the best environment for replicating and for retaining their stem cell characteristics. With the addition of various growth factors, the authors report the amnion-derived cells could differentiate to become ...

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

...ween fairly distant cells. If instead of a culture dish we were talking about a large metropolitan area, the distance would be about the equivalent to four or five city blocks. That's nothing short of amazing," remarked Dr. Salter, associate professor of immunology at the University of Pittsburgh School o...

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(Date:10/14/2014)... the planet,s leading questions is how to produce enough ... climate. The Food and Agriculture Organization of the United ... the next 40 years to feed a growing global ... necessary rise in food production. Plants—grains, cereals, fruits, ... livestock. Current research must tap into our knowledge ...
(Date:10/14/2014)... CA – October 14, 2014 – Scientists from The ... from the National Institutes of Health (NIH) to lead ... virus-induced hemorrhagic fever disease in Africa. The study aims ... why some patients die, while others survive the inflection. ... understand the basic mechanism of how Lassa fever virus ...
(Date:10/14/2014)... likely takes between 10 and 20 years to ... window" of intervention if detected early, which may ... say Australian clinical researchers. , Dr Jeremy ... Institute of Medical Research, analysed medical histories and ... pancreatic cancer patients, operated on between 1994 and ...
Breaking Biology News(10 mins):Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3Scripps Research Institute team receives $6.6 million to investigate deadly Lassa virus 2Early detection window when pancreatic cancer is in the family 2
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