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Longman Dictionary of Contemporary English
▪ The secretory response to cholera toxin developed gradually.
▪ The first changes of net water and ion transport were observed after the second or third hour after administration of cholera toxin.
▪ Such a lack of correlation was also observed by Levin after oral administration of 5 µg purified cholera toxin to healthy volunteers.
▪ When cholera toxin is used as secretagogue a variable response in stool volume should thus be expected.
▪ In our experiments the secretory effect of cholera toxin began in the second hour after administration of the toxin.
▪ Because infection with Vibrio cholerae is an important cause of diarrhoea, we decided to use cholera toxin as intestinal secretagogue.
▪ This delayed effect of cholera toxin is well known from animal experiments.
▪ The secretory effect of cholera toxin in our study probably continued for hours as evidenced by the stool output after the experiment.
▪ However, it can grow in cream at room temperatures and produces a toxin as it multiplies.
▪ The next day the rods were identified as Corynebacterium diphtheriae var gravis, and were shown to produce toxin.
▪ Apparently, different strains of the bacterium produce different toxins which are active against a wide range of insects.
▪ These bacteria can produce powerful toxins.
▪ Normally, even if babies have these bacteria, they don't produce toxins and remain healthy.
▪ But apparently no one else has looked for a phage that might produce such a toxin.
▪ But some E.coli bacteria can also produce toxins that cause food poisoning.
▪ Adding the copper, which is another metal toxin, only hastened the death of the fish.
▪ And we note this with sadness, because in functioning organizations these toxins need never become potent enough to taint performance.
▪ Daffodils, hyacinths, bluebells and many species of lily also contain toxins.
▪ He studies phytoplankton toxins that are eaten by shellfish, which then become potent vectors of these toxins paralytic to humans.
▪ Some species of pests then evolve ways of breaking down the toxins, and so on.
▪ The authority had coincidentally tested the water for toxins on about the same day as the officer cadets had used it.
▪ The first changes of net water and ion transport were observed after the second or third hour after administration of cholera toxin.
▪ This allows less dangerous toxins like lactic acid to accumulate, creating overly acidic conditions in your muscles.
The Collaborative International Dictionary

Toxin \Tox"in\, Toxine \Tox"ine\, n. [Gr. toxiko`n. See Toxic. ] A poisonous product formed by an organism, such as a pathogenic bacterium, a plant or an animal, usually having a high molecular weight, often a protein or a polysaccharide, but occasionally a low-molecular weight agent such as tetrodotoxin.

Douglas Harper's Etymology Dictionary

"organic poison," especially one produced by bacteria in an animal body, 1886, from toxic + -in (2).


n. A toxic or poisonous substance produced by the biological processes of biological organisms.


n. a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species


A toxin (from ) is a poisonous substance produced within living cells or organisms; synthetic toxicants created by artificial processes are thus excluded. The term was first used by organic chemist Ludwig Brieger (1849–1919).

Toxins can be small molecules, peptides, or proteins that are capable of causing disease on contact with or absorption by body tissues interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their toxicity, ranging from usually minor (such as a bee sting) to almost immediately deadly (such as botulinum toxin).

Toxin (disambiguation)

A toxin is a poisonous substance produced within living cells or organisms. Toxin may also refer to:

  • Any toxic substance, even synthetic substances created by artificial processes
  • Pollution
  • Toxin (novel) is a 1998 novel by Robin Cook
  • Toxin (comics), a fictional character by Marvel Comics universe, "grandson" of Venom and ally of Spider-Man
Toxin (novel)

Toxin is a 1998 suspense thriller written by Robin Cook. It tells the story of a doctor whose daughter is infected with E. coli and his investigation into how she contracted it and his battle to save her life and discover the source of her illness.

Toxin (comics)

Toxin or the Toxin symbiote is a fictional character in the Marvel Comics universe. He is the third major symbiote of the Spider-Man series, the ninth known to have appeared in the comics outside of the Planet of the Symbiotes storyline, and the first symbiote that Spider-Man considers an ally, despite temporary alliances with Venom on numerous occasions. The first host of the Toxin symbiote is former NYPD police officer Patrick Mulligan. Toxin later bonded to Eddie Brock as his second host after Patrick Mulligan was killed.

Usage examples of "toxin".

Iraq admits to producing anthrax, botulinum toxin, and aflatoxin for weaponization.

Both of them neutralize the placental toxin that causes the eclampsia of pregnancy.

He could picture one of the rival landholders salting the fishponds with an Atlas-derived toxin, something that would look like a natural bloom.

Look at the cavities here, that is where the toxins come from that fuddle him.

Increased hydration to carry toxins, extra fluids, and fat away from the area and out of the body.

Depleted, she toiled on, turning herself and Maulkin, using their bodies to disperse their mingled toxins to the entranced serpents.

The expert waited for the other to reassure her, meanwhile retrieving a complete suit readout indicating fatigue toxins and mild hypothermia and analyzing the vocal patterns to conclude that this individual was a pubertal human female, a native speaker of Gaesh with the accent common to the nearby merchanters of the Familias Regnant rather than that of the Guerni Republic.

He was the first man to show that complex animals-it was rotifers he used-produce a definite aging toxin as a normal part of their growth, and that it gets passed on to the offspring.

Most housing had been swallowed by beds of swampy fuzz, but a few buildings were so larded with chemical fungicides and brews of biological toxins that local bacilli and thallophytes had never established a foothold.

Mindfire toxin produced by a virulent mutation of the Veritas bacterium.

Owiginally we thought death was caused by pawalytic shellfish toxin, said the forensic pathologist, kills in half a seconddeath and wigor mortis are simultaneousbut we wuled that out.

The cult also was working with bioweapons, including anthrax and botulinum toxin.

It is somewhat reassuring that, even though it was extremely well financed and had access to scientific expertise, Aum Shinrikyo was unable to turn botulinum toxin, or anthrax, into an effective bioweapon.

We know that the Soviets also manufactured plague for use in weapons and researched other biological agents, including all those discussed in the chapters in this book, such as anthrax, tularemia, and botulinum toxin.

There was a considerable risk of increased toxin release due to cell destruction, but Lee was gambling on the CDC antitoxin countering the effect of any poison buildup.