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.
A harmful substance, specifically one produced by an animal, plant, or bacterium. Toxins can enter the body from one of these sources or be generated as by-products of metabolism. Constant exposure to toxins can overwhelm the body's detoxification mechanisms and lead to disease.
a substance that causes either permanent or reversible injury to the health of a living thing on contact or absorption, typically by interacting with biological macromolecules such as enzymes and receptors
Rather than being living organisms, toxins are chemicals produced by living organisms such as bacteria, plants, and animals. Some toxins are the most deadly chemicals known to man; however, they are never contagious.
A colloidal proteinaceous poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable, notably toxic when introduced into the tissues, and typically capable of inducing antibody formation. ( Webster's New Collegiate Dictionary, 1977)
A poisonous substance that can damage living cells and tissue inside the body. Toxins can enter the body from the outside environment (drugs, alcohol, pollution) or they can be produced inside the body as waste by-products of metabolism.
A product poisonous to the animal, arising from a plant or animal cell. It may be produced by the cell itself and excreted from the cell or it may be contained within the cell, such as the bacterial cell, and released only on the death of the cell.
A poisonous substance, especially a protein, that is produced by living cells or organisms and is capable of causing disease when introduced into the body tissues but is often also capable of inducing neutralizing antibodies or antitoxins.
A poison formed as a specific secretion product in the metabolism of a vegetable or animal organism, as distinguished from inorganic poisons. Such poisons can also be manufactured by synthetic processes.
Any poisonous substance, including those produced by a living organism. Microbial toxins are among the most poisonous substances known. Toxins are frequently responsible for the characteristic symptoms associated with infectious diseases.
A toxin (Gk. toxikon "(poison) for use on arrows,") is a poisonous substance produced by living cells or organisms. Toxins are nearly always proteins that are capable of causing disease on contact or absorption with body tissues by interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their severity, ranging from usually minor and acute (as in a bee sting) to almost immediately deadly (as in botulinum toxin).
A chemical that causes cell injury. A more specific microbiological meaning is a bacterial product that provokes injury that is accompanied by an inflammatory or immunological response. The product may be soluble (exotoxin) or associated with the bacterial cell wall (endotoxin).
Toxin is a fictional character, a superhero, in the Marvel Comics universe. He is the third major Symbiote of the Spider-Man series, and the eighth known to have appeared in the comics outside of the Planet of the Symbiotes storyline.