Toxicology

Toxicology

A branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals or physical agents on living organisms, as well as the symptoms, mechanisms, treatments and detection of poisoning, especially the poisoning of people.

Industry: Biology; Chemistry

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Toxicology

blood-testis barrier

Biology; Toxicology

Physiological interface between the blood supply and the spermatozoa of the seminiferous tubules. Note: This interface consists of specific junctional complexes between Sertoli cells.

attractant

Biology; Toxicology

Substance which attracts animals. Some attractants fulfill natural biological functions such as mating or predation: others may be used to attract animals for monitoring or for control.

bolus

Biology; Toxicology

1. Single dose of a substance, originally a large pill. 2. Dose of a substance administered by a single rapid intravenous injection. 3. Concentrated mass of food ready to be swallowed.

dermal irritation

Biology; Toxicology

Skin reaction resulting from a single or multiple exposure to a physical or chemical entity at the same site, characterized by the presence of inflammation; it may result in cell death.

accuracy

Biology; Toxicology

Quantity referring to the differences between the mean of a set of results or an individual result and the value which is accepted as the true or correct value for the quantity measured.

absolute lethal dose

Biology; Toxicology

LD 100 . Lowest amount of a substance which kills 100 % of test animals under defined conditions. Note: This value is dependent on the number of organisms used in its assessment.

biomass

Biology; Toxicology

1. Total amount of biotic material, usually expressed per unit surface area or volume, in a medium such as water. 2. Material produced by the growth of micro-organisms, plants or animals.