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Tag: "eats" at biology news

Active Vaccine Prevents Mice From Developing Prion Disease

...sease. Prion disease is contracted when an animal eats the body parts of other animals contaminated with prions. What makes these infectious particles unusual is that they are proteins that have the same amino acid composition as equivalent proteins occurring naturally in the body. But the prions turn de...

Roundup®highly lethal to amphibians, finds University of Pittsburgh researcher

...row better, but because you killed everything that eats grass," he said. Previous research had found that the lethal ingredient in Roundup® was not the herbicide itself, glyphosate, but rather the surfactant, or detergent, that allows the herbicide to penetrate the waxy surfaces of plants. In Roundup®, t...

It's electric: Cows show promise as powerplants

...h microorganisms where much of the food that a cow eats is temporarily held and is continuously churned until it can be completely digested. This liquid mass is what scientists call rumen fluid. The researchers collected the fluid through a cannula, a surgically implanted tube that leads directly from th...

Why do aneurysms form? New studies suggest leading role for white blood cells

...'s normal healing response doesn't work. Something eats away at smooth muscle cells in the wall of the aorta until it starts to fall apart." Researchers have found that AAAs appear to be associated with high levels of enzymes that are capable of doing that eating. But the question of how those enzymes ge...

A vaccine to kill tapeworm

...ential step in the tapeworm's life cycle. If a pig eats the eggs then, as in humans, the eggs hatch in the intestine, burrow through the gut wall and travel to muscles, where they form cysticerci. The infection rarely causes symptoms in pigs. Only cysticerci- not eggs- can develop into the adult form, so...

Enzyme affects hypertension by controlling salt levels in body

...re develops. Dr. Huang said that not everyone who eats too much salt ends up with hypertension, but some population groups, such as African-Americans, are more prone to develop salt-sensitive high blood pressure, suggesting that genetic factors may play a role in the disease. One extension of the curren...

Pillows - a hot bed of fungal spores

...pillows are inhabited by the house dust mite which eats fungi, and one theory is that the fungi are in turn using the house dust mites' faeces as a major source of nitrogen and nutrition (along with human skin scales). There could therefore be a 'miniature ecosystem' at work inside our pillows." Aspergi...

Geoscientists follow arsenic from chicken feed to streambeds

...ad is less important that what happens to what she eats when it is used as fertilizer. Organic arsenic is fed to poultry to prevent bacterial infections and improve weight gain. A little bit of arsenic is taken up by the tissue and the majority of it is excreted in urine. Poultry litter -- the wood chips...

New class of antibiotics effective against drug-resistant bacteria discovered in fungi

...ad is less important that what happens to what she eats when it is used as fertilizer. Organic arsenic is fed to poultry to prevent bacterial infections and improve weight gain. A little bit of arsenic is taken up by the tissue and the majority of it is excreted in urine. Poultry litter -- the wood chips...

Next good dinosaur news likely to come from small packages

...organic matter in meteorites to reconstructing who eats who in the food web from the tropics to the arctic. The trail is laid by stubbornly durable molecules. She uses mass spectrometry, an analytical technique that determines what molecules are present. Molecules may be tiny, but they can be tough, Ostr...

Single cell amoeba increases MRSA numbers 1000- fold

...ngle cell amoeba, Acanthamoeba polyphagam commonly eats and digests environmental bacteria. It also engulfs pathogens such as MRSA. However, instead of being digested by the amoeba, MRSA survives and replicates whilst inside the amoeba. Prof Michael Brown and colleagues at the University of Bath, found th...

One-dimensional diffusion accelerates molecular motors

...ry quickly. Howard says, "when it gets there, MCAK eats like a Pacman into the end of the microtubule." The chromosome halves follow this movement and are this way accurately distributed on the daughter cells. ...

Rewarding fat rats

...oportion to the amount of stored fat. A person who eats a lot during holidays, for example, will make more leptin than a person who sticks to a stricter diet. In work carried out by Shizgal's team, chubby lab rats were put on a diet to reduce their fat mass and, hence, their leptin levels. They found ...

Vaccine prevents prion disease in mice

...ment or cure. The disease spreads when an animal eats the body parts of other animals contaminated with prions. The disease causes dementia and abnormal limb movements. Prion is a protein that is also an infectious agent. The proteins are so similar to proteins found normally that the immune system ...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...ts its host with a microbial sledgehammer. It then eats the remains and lays low until the next host comes along." The genome sequence is peppered with genes that produce enzymes to digest proteins and other animal material in the soil. Also found, uniquely in this species, is a range of genes that all...

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