Larger fish that eat smaller fish can have concentrations of toxin a thousand times higher than the levels found in the river's sediment.
Dr Peter Chait and colleagues told an annual meeting of the American Roentgen Ray Society how injections of botulinum toxin A into the salivary glands helped 70% of children with cerebral palsy and severe drooling.
Here's a brief science lesson: Botox is a brand name for botulinum toxin type a.
The toxin attacks a protein that helps bind skin cells together.
Roger Wicker, a Mississippi Republican, received a letter containing ricin, a toxin derived from the castor oil plant.
It turns out that many commercial microwave popcorn bags are lined with PFOA, which the FDA labels a toxin.
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Staph bacteria produce a toxin that causes impetigo to spread to nearby skin.
Nicotine evolved as a toxin to keep bugs and deer from eating plants.
They feed on oak trees and their hairs contain a toxin that can cause itchy rashes, eye and throat irritations.
Scientists now believe the birds had consumed domoic acid, a toxin found in algae that had gotten into their diet.
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The FBI said the substance tested positive for ricin, a toxin derived from castor beans that has no known antidote.
The FBI said the letters tested positive for ricin, a toxin derived from castor beans that has no known antidote.
Dutschke, the affidavit stated, also said he'd never researched anything about ricin, a toxin derived from castor beans that has no known antidote.
In one experiment Walsh and his team injected mice with a toxin, called MPTP, that induces Parkinson's disease by killing off dopaminergic neurons.
In an oxygen-free (anaerobic) environment at a certain temperature, pH and salinity, the bacteria can produce a toxin that in very small amounts can cause life-threatening paralysis.
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At issue is whether absinthe needs to contain minimum levels of two substances - anethole and the chemical thujone, a toxin extracted from wormwood, which reputedly has mind-altering effects.
The piece pointed out that some of these products were improperly purified which meant that the health benefits from consuming Omegas each day were offset by the risk of ingesting a toxin.
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Just recently, a third theory has entered the arena, that Alexander died from a maladministration of hellebore, a medicine that, if given in too large a dose, could also be a toxin.
Giery said the hospital's diagnosis at the time of death was that his illness was caused by food poisoning from ciguatera, a toxin sometimes found in large saltwater fish including grouper, red snapper and sea bass.
Experts believe this variant has acquired a deadly combination of producing a toxin which can damage the kidneys and being really good at sticking to the gut, allowing more bacteria to grow and ultimately produce even more toxin.
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We've known for some time that lead is a potent neuro-toxin that can cause significant damage to a number of organs in the body, including the central nervous system, and can lead to behavioural problems in children.
It could have been worse because it was chemically similar to a potent toxin that causes liver cancer, Nichols said.
While analysis of spirulina has shown that it does not contain a harmful toxin called microcystin, other blue-green algae has found to be frequently contaminated.
An excellent example is corn crafted by introducing into commercial corn varieties a gene (or genes) encoding a natural toxin(s) from the bacterium Bacillus thuringiensis.
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Insect-resistant corn containing the BT toxin, derived from a bacterium and used in organic farming, does kill butterflies and other good insects but far less than 1% of them.
Measurements in 2011 found that concentrations of a liver toxin they produce were hundreds of times higher than levels approved by the World Health Organization for drinking and recreational waters.
Three of four field tests conducted on the powder inside the envelope addressed to Wicker tested positive for a protein that later tests determined to be ricin, a lethal toxin, it says.
The target this time was a draft scheme to enforce the Biological and Toxin Weapons Convention (BWC), a 1972 treaty banning germ war.
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