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Tag: "formed" at biology news

Fat stem cells being studied as option for breast reconstruction

...n a rat model, the cellular combination eventually formed what they describe as a "mound" of tissue. The fat-derived stem cells being used in the study are obtained from breast cancer patients. "We need to demonstrate that fat-derived stem cells taken from a breast cancer patient behave no differentl...

How many genes does it take to learn? Lessons from sea slugs

... work using Aplysia as a model of how memories are formed in the human brain. Despite its simple nervous system - Aplysia has about 10,000 large neurons that can be easily identified, compared with about one hundred billion neurons in humans - the animal is capable of learning and its brain cells communi...

Researchers add to understanding of how brain cells communicate

... disease, and stroke, said Johnson. Memories are formed by strengthening the connections between brain cells, known as synapses. If you touch a hot stove, the pain signal from your hand and the visual signal from your eyes reach the brain at about the same time, forging a memory. Specifically, memory requ...

Study shows how herpes infects cornea, evades immune cells

... which are highly acidic. But even though the sacs formed by the stroma cells were similar to the phagocyte's sacs, Shukla said, the envelope containing the herpes virus genome emerges from the sac undamaged and able to infect the cell. "This raises the interesting possibility that herpes may be able to eva...

Singing for survival

...d describe gibbon songs as a 'crescendo of notes', formed by combining up to seven notes ?including 'wa', 'hoo', 'sharp wow' and 'waoo' ?into more complex structures or 'phrases'. The researchers wanted to establish whether there were any differences between the typical duetting morning song and that de...

A new understanding of how cells defend themselves against bacterial pore-forming toxins

...ample, this pathway would be triggered. The lipids formed in the metabolic pathway would enable the cell to enlarge its membrane to accommodate the extra water. "Toxins have co-evolved with their hosts for a long time," says Van der Goot. "That makes them good tools with which to study normal cell physio...

Dinosaurs -- stones did not help with digestion

...sts conclude, the intestines of the sauropods were formed in such a way that the food was retained there for a very long time, in order to improve the digestive process. There is another group of dinosaurs, however, whose remains of gastric stones can be linked up with a birdlike gastric mill, according ...

A wolf in sheep's clothing: Plague bacteria reveal one of their virulence tricks

...overed that the configuration looked just like one formed by some of the host's own signaling proteins. And it's this mimicry, he found, that leads to a signaling shutdown and deregulation of the cell's normal structure. After establishing this effect, Prehna set about disrupting it by mutation. Using the...

Professors to develop hand-held pathogen testing device

... of Michigan's Department of Chemical Engineering, formed a cross-disciplinary team to develop this technolo...e device. AquaBioChip LLC, a Lansing-based company formed by the same team through a previous grant from the Michigan Economic Development Corp., will test th...

Advance helps explain stem cell behavior

... instance, virtually all of the types of cells are formed in 12 days, during what would correspond to a fraction of the "first trimester" of the human gestational period, as genetic mechanisms guide the "readout" of DNA and control the formation of different types of cells. The cell types themselves are cre...

Biofuel cells without the bio cells

...eins, outer membrane c-type cytochrome A, or OmcA, formed a dense coating on the iron-rich mineral hematite. The metal in the mineral acts as an "acceptor," or dumping point, for thousands of trillions of electrons per square centimeter shuttled by the OmcA-donor. The function is a relic of respiration, in ...

Researchers give name to ancient mystery creature

...and grubs. "It had sharp crests on the teeth which formed blades, indicating it was likely carnivorous," said Craig Scott, a PhD candidate and lead author of the study. Horolodectes means 'hourglass biter', in reference to the creature's peculiar hourglass-shaped pre-molars, the teeth between the canine and...

Genomic comparison of lactic acid bacteria published

...a group of at least a dozen academic organizations formed in 2001. Paul Richardson, DOE JGI Genomic Technologies Program head, said that the functional classification embraced a variety of industrially important genera, including Lactococcus, Enterococcus, Oenococcus, Pediococcus, Streptococcus, Leuconostoc...

Researchers barcode DNA of Venice museum's vast fungi collection

...t a kick start when the Venice Society of Mycology formed in the late 1980s to monitor the mycological flora...amples represented over 1,200 species of fungi and formed the foundation of the museum's present collection. Garbelotto noted that the relatively young age...

World's smallest cancer detection device

...ore aggressive cancer therapy. In 2005, Einstein formed an alliance with UAlbany's CNSE to advance education and research in the rapidly growing fields of nanobiotechnology and nanomedicine. "This NCI grant marks a true milestone for this partnership, which combines the unique expertise and resources of b...

Scientists get best look ever at water-life connection

...single picosecond. But the water near the protein formed several distinct layers. The outermost layer flowed at a slower speed than in bulk water, and the innermost layer even slower. In that innermost layer, each movement of a water molecule to connect with the protein required at least 100 picoseconds to...

Exposure to dioxins influences male reproductive system, study of Vietnam veterans concludes

...ase in male reproductive tract disorders. They are formed as byproducts of processes such as incineration, smelting, paper and pulp manufacturing and pesticide and herbicide production. Humans are exposed to these chemicals primarily through consumption of animal fat and dairy products. Babies are expose...

A fisheye view of the deadliest breast cancer

... confocal microscopy. While the parental MDA cells formed tightly packed aggregates, RhoC-overexpressing cells scattered within the fish tissue. RhoC overexpression also increased tumor cell membrane dynamics leading to continuous shedding of small cellular fragments. The transparent fish also let the ...

Protein 'fingerprint' in spinal fluid could spot Alzheimer's disease

...dually might not point to Alzheimer's but together formed an identifying pattern or "fingerprint" specific to the illness. "Although it need not have turned out that way, several of the 23 markers that emerged from this analysis proved to be proteins with known links to the pathological mechanisms of Alz...

Squid-inspired design could mean better handling of underwater vehicles

...ing the formation of vortex rings, much like those formed by squid and jellyfish to move themselves underwater. Vortex rings are formed when a burst of fluid shoots out of an opening, moving in one direction and spreading out as it curl...

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