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Tag: "red" at biology news

Yale biologists 'trick' viruses into extinction

...ace, but no nucleus for virus reproduction. Mature red blood cells could fill the bill, because they lack a nucleus and could be engineered as sink habitats that greatly outnumber the T-cell source habitats in the body." ...

Grape expectations for healthier wine

...wines. Antioxidants, natural compounds found in red wine, chocolate, coffee and many fruits, are believed to help prevent a variety of diseases including cancer and neurodegeneration. ...

Shedding new light on proteorhodopsin

...green light, but stopped when they were exposed to red light." In the absence of the azide respiratory poison, green light had no effect on the flagellar motors of these proteorhodopsin-equipped E. coli. By measuring the pmf of individual illuminated cells under different concentrations of azide or v...

NASA predicts nongreen plants on other planets

...lorophyll in most plants on Earth absorbs blue and red light and less green light. Therefore, chlorophyll...ght, absorbing different colors. As a result, more red light particles reach Earth's surface than blue or green light particles, so plants use red light fo...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

... caller's fighting ability. By contrast to male red deer, who are renowned for roaring with the head elevated, male reindeer emit a hoarse rattling with the head kept low. In this posture the inflated air sac expands the neck region. Both acoustic and optical display serve to deter rival males and the...

Better assessment of transfusions could save blood

...equently, these patients receive a large number of red blood cell (RBC) transfusions in order to restore proper hemoglobin levels. New research shows that alternative treatments may lead to fewer transfusions, conserving critical blood supplies in hospitals. The report is published in Seminars in Dialysi...

Scientists find genes involved in the battle between Hessian flies and wheat

Wheat has ways to battle the tiny, red wormlike insects that nibble on the plant's leaves and can destroy crops worldwide, but the Hessian fly larvae that survive eventually evolve methods to overcome plant defenses. Purdue University and USDA-Agriculture Research Service scientists tryi...

Researchers design pulsed mircrojet system to deliver protein drugs without pain or bruising

...h as insulin, growth hormone and erythropoietin, a red blood cell booster. Needle-free delivery of vaccines has recently been identified as one of the significant emerging challenges in global health. The researchers felt that the pain and bruising caused by previously-developed jet injectors was cau...

Red flag for repetitive stress injuries identified for first time in humans

...indicate another type of injury, they do provide a red flag where before there was none," said Barr, associate professor of physical therapy at Temple's College of Health Professions. Currently, healthcare providers can diagnose repetitive motion injuries (RMI) based only on physical examination findi...

Sandia researchers take new approach to studying how cells respond to pathogens

...ntially colored dyes. The dyes range from green to red and give researchers the opportunity to track proteins and see, for example, the dynamic cellular production of proteins or protein-binding processes inside or on the surface of the cells. The team is developing one platform with two complementary...

In young mice, gregariousness seems to reside in the genes

...the new study. Performing under the dim glow of red lights to simulate the nocturnal environment when mice are most active, the sociability of test mice was assessed when they were reunited with their former cage mates. At the same time, the researchers tuned in to the ultrasonic chattering that mice ...

It's never too late to get it back! Aging interrupted

... that vegetarians and fish eaters live longer than red meat eaters, and that, generally, the more fruit and vegetables in the diet, the better your health and longer your lifespan....

Deconstructing brain wiring, one neuron at a time

...elected neurons ?as well as a gene that fluoresces red when expressed. Then they applied the modified rab...en. The result was spectacular: as expected, these red cells were selectively infected by the virus, which spread to hundreds of surrounding cells, turning...

Dinosaur hearing, listening to muscle noise, quieter cubicles

... Crackling electricity in the atmosphere" Howling red dust storms" Sounds that become muffled from just a few feet away" At session 3aPAb, researchers will present the latest theoretical and experimental knowledge on acoustical conditions on several other terrestrial bodies in our solar system. In ...

DNA-damage test could aid drug development

...pproved test, the new test looks for DNA damage in red blood cells formed in the bone marrow of mice. The precursors to red blood cells are handy for this because such cells normally lose their nucleus during the last stage ...

Technique monitors thousands of molecules simultaneously

...used the alternate set of electrodes to put down a red dye. The result was a red and green chip, Washington University's colors. This, Moeller said, is a striking image of the techn...

Catching cancer's spread by watching hemoglobin

...ted. Since hemoglobin is highly concentrated in red blood cells, imaging the locations where this molecule occurs can map out the distribution of red blood cells and reveal the vessels themselves. If the imaging is fast enough, researchers can captur...

Moths mimic sounds to survive

...e two species of bats used were big brown bats and red bats. Barber raised the bats in the lab so behavior learned in the wild would not influence the results of the experiment. Barber said anecdotal observations have suggested that animals such as snakes, owls and bees use acoustic mimicry. This s...

HIV and malaria combine to adversely affect pregnant women and their infants

...t malaria in the first place." PAM occurs when red blood cells infected with malaria parasites gather in the placenta resulting in damage to both mother and developing infant. First-time mothers are particularly susceptible to PAM whereas women in subsequent pregnancies become protected against PAM. ...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

... the pigments – having enough of them to develop a red beak and enough to combat testosterone, which you also need to be red.” McGraw and Ardia describe their findings in “Do carotenoids buffer testosterone-induced immunosupression" An experimental test in a colorful songbird,” in the current issue (J...

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