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A toxic substance of plant origin.
Synonym(s): plant toxin
[phyto- + G. toxikon, poison]
toxin(tok'sin) [ tox(ic) + -in]
A poisonous substance. See: antitoxin; hazardous material; health hazard; permissible exposure limits; phytotoxin; right-to-know law; toxoid
The three proteins made by the infectious bacterium Bacillus anthracis responsible for the deadly effects of anthrax. Anthrax toxin includes protective antigen, which helps lethal and edema factors enter and kill cells by disrupting the cell membrane's normal biochemical functions.
A poison produced by bacteria that cause cell damage. They include exotoxins, e.g., those secreted by Staphylococcus aureus and Corynebacterium diphtheriae, and endotoxins. Endotoxins continue to cause damage even after the bacteria are killed.See: bacteria
botulinum toxin type A
A neuromuscular blocking drug used to paralyze muscles, esp. muscles in spasm. It is also used for cosmetic purposes, e.g., by those desirous of maintaining a fixed facial appearance.
A neurotoxin that blocks acetylcholine release, produced by Clostridium botulinum, the causative organism for botulism. Seven types of the toxin have been identified.
Any of a group of toxins that can cause necrosis of the skin. Coagulase-positive Staphylococcus aureus produces several such toxins.Synonym: exfoliative toxin See: Kawasaki disease; staphylococcal scaled skin syndrome; toxic shock syndrome
Dick toxinSee: Dick toxin
The toxin produced by Corynebacterium diphtheriae.
diphtheria toxin for Schick test
The toxin used for determining immunity to diphtheria.See: Schick test
The exotoxin of various species of Shigella.
The former name for the streptococcal pyrogenic exotoxins.
exfoliative toxinDermonecrotic toxin.
Either of two disease-causing proteins (Ib and Ia) released by the bacterium Clostridium perfringens. Ia binds to Ib and gains entry into the host cell cytoplasm. Ib subsequently disrupts the actin cytoskeleton and kills the cell.
Any chemical or physical agent that destroys or inactivates the ovaries or testes, damages chromosomes, adversely effects reproductive hormones, or has a harmful impact on a developing fetus.