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Tag: "distinguishing" at biology news

Lessons from the orangutans: Upright walking may have begun in the trees

...nally used signs of bipedalism as key criteria for distinguishing early human, or "hominin," fossils from those of other apes. But, this distinction is complicated by recent fossil evidence that some early hominins, including Lucy ( Australopithecus afarensis ), lived in woodland environments, while even earlier fo...

Catching cancer's spread by watching hemoglobin

...s just below skin growths would be very useful for distinguishing between malignant and benign skin tumors, and would remove the critical need for skin biopsies, which is especially helpful if there are multiple suspicious areas that need to be investigated. Since hemoglobin is highly concentrated in red blood c...

Researchers find gene mutation that causes infertility in male mice

...oof." Mouse models, he said, will be critical in distinguishing between those DNA sequence changes that are benign in humans versus those that disrupt sperm or egg production. The researchers are engaged in a project to identify ultimately all the genes needed for fertility in mice and apply this information to t...

Illuminating the dark side of plants

...y illustrated, elegantly highlighting each plant's distinguishing characteristics. The images include 398 full-color photographs as well as color plates from the LuEsther T. Mertz Library of The New York Botanical Garden. The book contains vital information on a broad variety of poisonous and injurious temperat...

Common blood test can help distinguish between mononucleosis and tonsillitis

...s of mononucleosis, the authors write. Currently, distinguishing between them requires an expensive mononucleosis spot test. Dennis M. Wolf, B.Sc., D.O.-H.N.S., M.R.C.S., and colleagues at St. George's Hospital, London, retrospectively analyzed laboratory tests from 120 patients with infectious mononucleosis a...

Stanford scientists make major breakthrough in regenerative medicine

...ms. Sea squirt larvae have primitive spinal cords, distinguishing them in the greater chain of life and on the evolutionary ladder. Specifically, sea squirts, like humans, belong to a group of animals called chordates (organisms with some level of spinal cord development), and many scientists believe that sea squir...

Targeting tumors the natural way

By mimicking Nature's way of distinguishing one type of cell from another, University of Wisconsin-Madison scientists now report they can more effectively seek out and kill cancer cells while sparing healthy ones. The new tumor targeting strategy, presented today (March 25) at the annual nati...

Brain tissue reveals possible genetic trigger for schizophrenia

...e. Using bioinformatic analyses, we found that the distinguishing microRNAs appear to regulate genes involved in synaptic plasticity." Acknowledging this was a pilot study, Perkins and her colleagues plan further research with larger tissue samples. ...

Molecules in blood foretell development of preeclampsia

... high levels of these molecules might also help in distinguishing preeclampsia from chronic high blood pressure, kidney disease and other conditions that can produce symptoms similar to preeclampsia. Dr. Levine said that both sFlt1 and soluble endoglin are referred to as soluble because they circulate in the bloo...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

...h those of another, we are in fact highly adept at distinguishing our own actions from those of someone else. The basis for this distinction is explored in the study reported by Simone Schütz-Bosbach, Patrick Haggard, and colleagues, who used an established method--the so-called rubber-hand illusion--for experiment...

Elasticity imaging identifies cancers and reduces breast biopsies

...ow specificity, meaning they are less effective at distinguishing benign from malignant lesions, resulting in a high number of invasive biopsies. ACS reports that 80 percent of breast lesions biopsied are found to be benign. Elasticity imaging is a modification of a routine ultrasound exam. It is like a manual s...

Ghost protein leaves fresh tracks in the cell

...nd mortar to shape and fortify cell membranes. But distinguishing which protein is the brick and which is the mortar has turned out to be difficult. New evidence suggests that spectrin can do both jobs at once. Ron Dubreuil, associate professor of biological sciences at the University of Illinois at Chicago, repor...

NHGRI announces latest sequencing targets

...ools to better understand human variation, such as distinguishing functional from non-functional variations within genes. A final set of sequencing targets was chosen to address the question: What genes and other genomic features were responsible for the origin of multi-celled organisms? More than 1 ...

New HIV study identifies high-risk subgroups of adolescents

...authors write. Age and race were also factors in distinguishing the clusters of males, but in contrast to the authors?hypothesis, African Americans did not represent the greatest proportion of those at high sexual risk. In fact, more than half (52 percent) of the boys in the cluster reporting the most unprotected...

UF scientists test improved gene therapy method for hereditary heart conditions

..."It's efficient and long lasting. One of the other distinguishing features of our research is it's probably the first to demonstrate a physiologic correction of a genetic cardiac abnormality." Additional tests in rhesus monkeys conducted in conjunction with scientists at the California National Primate Research C...

Common molecular 'signature' identified in solid tumors

...nant tissue. Further tests showed that 21 of the distinguishing miRNAs were deregulated in at least three of the cancers ?and in some cases, as many as five or all six. The researchers defined this limited set as the "miRNA signature" in solid tumors. Croce says finding such a signature is important because it ...

Is the brain wired for faces?

... developed unique mechanisms for understanding and distinguishing them. However, Riesenhuber and his team thought th...mply developed a strong talent for recognizing and distinguishing faces. This experience with faces then leads to the learning of a population of neurons finely tuned...

New method for identifying microbes

...ning up contamination to identifying pathogens and distinguishing harmless bacteria from potential bioterror weapons. "Microbial communities are enormously diverse and complex, with hundreds of species per milliliter of water or thousands per gram of soil," said Brookhaven biologist Daniel (Niels) van der Lelie, l...

Scientists discover new genetic subtypes of common blood cancer

...designed to recognize human faces plucked the four distinguishing gene patterns out of a landscape of many DNA alterations in the myeloma genome, the researchers report in the April issue of Cancer Cell. These results "define new disease subgroups of multiple myeloma that can be correlated with different clinical ...

New DNA 'fingerprinting' technique separates hemp from marijuana

...ult to tell apart. The technique holds promise for distinguishing different cultivars (domesticated plant lines) in U.S. criminal cases. It may also prove useful in countries where the cultivation of hemp is permitted but marijuana is illegal, as in Canada and Europe. The work appears in the March issue (volume 51,...

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