Poisons and toxins are molecules that are harmful to living organisms. it is important to note that virtually any substance can be harmful at high enough concentrations--as Paracelsus (1493-1541) said in the sixteenth century, "the dose makes the...

A toxin is a substance that is harmful to living organisms. Toxic effects can be the result of exposure to toxins. Since World War II, the use of chemicals, especially synthetic ones, has increased tremendously in our society. Consequently, people have...

The term biotoxin refers to naturally occurring, poisonous agents that can cause illness or injury to humans, animals, and marine life. They may come from bacteria, fungi, algae, or virii. Some of the more well-known bacterial biotoxins include...

Toxins are chemicals or physical agents that exert a toxic effect on living organisms. Toxic means poisonous: that is, causing a reaction with cellular components that disrupts essential metabolic processes. At some level of exposure, all chemicals,...

A toxin (Greek: τοξικόν, toxikon, lit. (poison) for use on arrows) is a poisonous substance produced by living cells or organisms that is active at very low concentrations. Toxins can be small molecules, peptides, or proteins and are capable of...

A team of Arizona and Mexican researchers has engineered and tested a new version of a natural toxin to kill pink bollworms that develop a resistance to existing pest control methods.Until the introduction 11 years ago of cotton genetically engineered to produce Bacillus thuringiensis toxins,...

Researchers have finally confirmed a 20-year-old theory about how the red tide algae produce their toxins.The finding may be a first step in protecting seaside communities, shellfish beds, marine mammals and humans from the periodic outbreaks of the dangerous tides.Red tides are natural occurrences, when...

Tests that determine whether toxic chemicals accumulate in food may be missing some hazardous materials and need to be updated, a Canadian researcher said Thursday.It has long been known that toxins can accumulate in the food chain, rising to higher concentrations as larger animals eat...

More than 500 hurricane survivors living in government-issued trailers and mobile homes are accusing the manufacturers of using inferior construction materials in a profit-driven rush to build them for the federal government.Thousands of Louisiana residents displaced by hurricanes Katrina and Rita in 2005 were exposed...