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Tag: "dish" at biology news

Brain inflammation may be friend, not foe, for Alzheimer's patients

...he evidence comes from experiments with cells in a dish or postmortem human tissue, not from living organisms in which disease progression is closely monitored. “People have talked for a long time about a balance of ‘good guys’ and ‘bad guys’ within the inflammatory process, either causing harm or alle...

Growing nerve cells in 3-D dramatically affects gene expression

... as they went into the dishes to be sure that each dish contained precisely the same amount. After a day of growth, the researchers extracted RNA from the cells and conducted a microarray analysis to determine differences in gene activity. The results: A whopping 1,766 genes responded differently, eith...

Brown cancer biologists identify major player in cell growth

...ts -- common connective tissue cells -- in a Petri dish with nutrient-rich serum and watched them grow. When they detonated their time bomb, GABP was disrupted, and the fibroblasts' ability to divide was dramatically reduced. At the same time, other genes known to restart cell division were unchanged. ...

Scientists clone mice from adult skin stem cells

...s, a process which can be done in a tissue culture dish and which is simpler and more efficient than generating a cloned mouse. Although this procedure has not yet successfully generated human embryonic stem cell lines, once technological hurdles are overcome, it may be possible in the future to use a pat...

New molecular pathway could reveal how cells stick together

...rch grant to extend her work from cells in a Petri dish to an organism. The grant, from the National Institute of General Medical Sciences, is for $ 1.4 million over five years. "We're trying to figure out how it works in whole flies," Page-McCaw said. "When you take a cell out of the organism it behav...

Penn researchers replace organ in adult mice using 'single-parent' stem cells

... from embryonic stem cells entirely in the culture dish before transplanting them. The Penn researchers believe that using uniparental embryonic stem cells as a tissue source could provide a major advance in the alleviation of human disease, provided these results can be translated into human studies. ...

Microfluidic chip helps solve cellular mating puzzle

...eyond what you can do in a traditional biology lab dish that’s filled with a large colony of cells." Using cameras attached to a microscope, the researchers were able to view a microfluidic chip and study the mating behavior of yeast cells in response to different concentrations of pheromone in the pre...

Manual dishwashing study digs up dirt on dish cleanliness

... for an hour—a plausible wait in a busy restaurant dish room—they gave each utensil a few scrubs per side ... and Pascall discovered that washing dishes in hot dish water, followed by soaking in extra sanitizers, eliminated almost all of the bacteria on them, even ...

Researchers develop technologies to devour food pathogens

...he process works by shining a laser though a petri dish containing bacterial colonies. A computer program determines the type of bacteria by analyzing how light is refracted-a unique "scatter pattern." Bhunia has shown his technology is capable of recognizing Listeria monocytogenes, a microbial pathogen...

Rescuing injured hearts by enhancing regeneration

...y could coax cardiomyocytes to multiply in a petri dish by inhibiting an enzyme known as p38 MAP kinase, which normally suppresses cardiomyocyte replication. [See: www.childrenshospital.org/newsroom/Site1339/mainpageS1339P1sublevel139.html ] Engel and Keating (Keating is now at the Novartis Institute ...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...ferentiation of stem cells into neurons in a Petri dish is a little bit like a black box and not very efficient," explains co-author Samuel Pfaff, Ph.D., a professor in the Salk's Gene Expression Laboratory, who together with co-author Gordon Gill, Ph.D., of the Departments of Medicine and Cellular and Mo...

'Mindless autopilot' drives people to underestimate food decisions

...0 calories) when it was in an opaque covered candy dish than a see-through dish. Always sit at least an arm's length away from a buffet table or snack bowl. ...

MIT creates 3-D scaffold for growing stem cells

...ion-which may one day replace the ubiquitous Petri dish for growing cells-in the Dec. 27th issue of the PLoS ONE. Shuguang Zhang, associate director of MIT's Center for Biomedical Engineering, is a pioneer in coaxing tiny fragments of amino acids called self-assembling peptides to organize themselves into...

Birds going extinct faster due to human activities

...working with. When you grow the cells in a culture dish you are actually educating them to become something very special." In that respect, the discovery sheds light on how embryonic stem cells diversify to form various neural structures, one of the fundamental mysteries of brain development, the resea...

Medium is the message for stem cells in search of identities

...working with. When you grow the cells in a culture dish you are actually educating them to become something very special." In that respect, the discovery sheds light on how embryonic stem cells diversify to form various neural structures, one of the fundamental mysteries of brain development, the resea...

Movie spies on malaria parasite's sneaky behavior

...ce of liver cells that had been grown in a culture dish and infected with malaria. So they asked Ménard and Amino for help finding out whether liver cells in an infected animal developed the same protrusions. Amino captured a series of images inside living mice at one-second intervals to track the para...

Purdue creates new low-cost system to detect bacteria

...hnology - works by shining a laser through a petri dish containing bacterial colonies growing in a nutrien... Individual bacterial colonies growing in a petri dish also distort light passing through them, just as a lens changes light-wave patterns. "Therefore, w...

Wisconsin scientists grow two new stem cell lines in animal cell-free culture

...dy generally requires providing the cells in a lab dish with the right mix of nutrients, hormones, growth factors and blood serum. But those methods have often depended on animal cells - such as those obtained from mouse embryos in the case of embryonic stem cells - and other animal products to keep the ...

Powerful technique for multiplying adult stem cells may aid therapies

...d the stem cells in the lab and cultured them in a dish by themselves, they died. When he mixed them with these newly discovered cells, they thrived. But how did these new cells manage to sustain the stem cells so dramatically? Zhang used a microarray platform to search for genes that were active in thes...

Breakthrough for stem cell research

... animal tissue to keep the hESC alive in the petri dish or as a culture to grow it on," said Dr Sidhu. "Those animal products have the potential to transmit retroviruses in humans, which could have disastrous consequences." Human embryonic stem cell lines are derived from specialized cells from embryos ...

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