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Tag: "kinds" at biology news

Anticipation plays a powerful role in human memory, brain study finds

...n tissue. They began by showing the volunteers two kinds of signals. One was neutral, but the other indicated that some type of gruesome picture was soon to follow, such as explicit photos of bloody, mutilated bodies.Thirty minutes after the researchers had shown dozens of violent images, they quizzed stud...

New clues to how sex evolves

... elegans, and also C. remanei, there are only four kinds of ZIM proteins that serve to initiate the pairing of six different chromosomes (in C. briggsae, only five proteins for six chromosomes), "so there must be more at work in helping the chromosomes that share the same ZIM figure out what's their proper...

Lost in the labyrinth

...gher up in the blood lineage hierarchy. Particular kinds of stem cells disappeared from the bone marrow of the mice. Others were too frequent. Bone marrow cells didn't develop into myeloid and red blood cells. B- and T-cells were also blocked at early stages, but in a different way. This hints that they ma...

Stem cells engage in dialogue with the cells that regulate their futures

...new cells. The niches help regulate the amount and kinds of new cells produced to meet current demands. The niches also help maintain a supply of stem cells for later use. Inside your body, for example, there are separate niches for stem cells that will become blood, for cells that will become skin, an...

Unique gene regulation gives chilly bugs survival advantage at bottom of the world

...nd are therefore prepared to respond to the normal kinds of challenges that they face in the harsh Antarctic environment. But the adults produce these proteins only when directly confronted with an environmental challenge. "Clearly there is some kind of developmental switch that happens between the larva...

Neuron cell stickiness may hold key to evolution of the human brain

...computational side, we're trying to identify other kinds of sequence changes that may have played a role in human evolution, such as nucleotide insertions, deletions or duplications, and chromosomal rearrangements." Added Rubin, "In hindsight the results of our study make sense since our cognitive abil...

ASU researchers test antibacterial effects of healing clays

...can vary in width and composition depending on the kinds of waters and elements present when it was formed. It is this interlayer where much of the elemental variability between clays can be found. And the interlayer surface area is huge (greater than 100 square meters per gram of clay ?bigger than a footb...

Human preference for other species could determine whether they survive

...losely related organisms," he said. "For different kinds of organisms, different qualities seem to cause differences of appeal." The work is a signal to conservationists to be mindful of the role of public popularity, and what might cause it, when making decisions about how to deal with various species...

Genes and genius: Researchers confirm association between gene and intelligence

...on the study. "It's a gene that's involved in some kinds of brain processing, and specific alterations in the gene appear to influence IQ. But this single gene isn't going to be the difference between whether a person is a genius or has below-average intelligence." Dick's team comprehensively studied t...

Stem cell therapy shows promise for rescuing deteriorating vision

...imals with degenerative eye disease similar to the kinds of diseases that afflict humans. The new study appears today (March 28) in the journal Public Library of Science (PLoS) One. The lead author of the study, University of Wisconsin-Madison researcher David Gamm, says the cells - formative brain cell...

New nanotechnology able to examine single molecules, aiding in determining gene expression

...molecules." "We are likely to see more of these kinds of highly multi-disciplinary research aimed at single molecule sequencing, genomics, epigenomic, and proteomic analysis in the future," added Bud Mishra, a professor of Computer Science, Mathematics, and Cell Biology from NYU's Courant Institute and ...

Nanoparticles can track cells deep within living organisms

...tially useful for vascular research as well. "Many kinds of cells are involved in the formation of new blood vessels," Partlow says. "Because we can create a separate MRI signature for different cells with these various types of unique nanoparticles, we could use them to better understand each cell type's ...

Engineering the heart piece by piece

...an then encourage the cells to begin producing the kinds of molecules needed to signal to and connect with other cells, and to produce the extracellular matrix that supports cells in tissue. The U-M Artificial Heart Laboratory has teamed up with a commercial partner to develop a novel perfusion system ...

Hay fever can send work productivity down the drain

...ith a broad spectrum of allergy symptoms. “Both kinds of physicians have access to thorough diagnostic tests, and can also prescribe heavy-duty allergy drugs, such as steroids that help block the body's natural reaction to allergens,?she continued. Participants who self-managed their allergies relied on...

Ultrasound upgrade produces images that work like 3-D movies

...ability can improve the early diagnosis of certain kinds of birth defects of the face and skull and improve surgeons' depth perception during ultrasound-guided medical procedures, including tumor biopsies and robot-assisted surgeries done through tiny "keyhole" incisions. The Duke team, which also inclu...

Will the plague pathogen become resistant to antibiotics?

.... But because the same ability is present in other kinds of bacteria from a broad range of livestock, antibiotic resistance could potentially spread to other Y. pestis and also other bacterial pathogens. In a paper published March 21 in the new journal PLoS ONE, the authors say this possibility "represents...

Lead with a poisonous electron shield

...us system, kidneys, liver, brain, and blood. These kinds of damage are especially severe for children as they can be irreversible. Complexation agents that grab onto the metal cations are used as antidotes. However, these agents are not lead-specific, meaning that they also remove other important metal cat...

Producing medicines in plant seeds

...rom this research, it is now also clear that these kinds of antibody variants can be used in medical applications and that it is possible to produce them in the seeds of plants, which can have enormous advantages over conventional production methods. Production of biotech medicines A large number of t...

Growth hormone is not the anti-aging bullet for healthy adults

...es in 2004. The Web is replete with ads for all kinds of products said to contain GH, from pills, sprays, injections, secretagogues, homeopathic formations, and GH releasers and enhancers. GH, often in conjunction with vitamins, testosterone and other hormones, is said to increase muscle strength and ma...

University of Alberta researchers unravel intricate animal patterns

...aightforward sets of rules can produce the complex kinds of patterns seen in nature," says Lewis, also from the Department of Biological Sciences. "Her work has stripped out the unnecessary detail to the core elements of communication that give rise to the patterns found in large scale groups." In parti...

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