Traditionally used to indicate activities concerned with the improvement of the basic environmental conditions affecting health, i.e., water supply, human and animal waste disposal, protection of food [..]

The environment at a work place (WHO, 1979).

Once emitted into the environment, a chemical substance may be transported in the biosphere and undergo various types of chemical changes (WHO, 1979).

The diameter of a particle with a mass equal to the mean mass of all the particles in the population (IAEA, 1978).

A protein produced in body in response, and specific for, a foreign substance or antigen.

The term applied to the mucous membrane that covers the eyeball and undersurface of the eyelids.

Biotransformation of relatively inert chemicals to biologically reactive metabolites (compounds). See biotransformation.

A method for the estimation of the prevalence and/or incidence of disease or diseases in a population. A morbidity survey is usually designed simply to ascertain the facts as to disease distribution, [..]

The absolute difference between two rates, for example, the difference in incidence rate between a population group exposed to a causal factor and a population group not exposed to the factor:

This is a term used to describe anything which is characterized by the absence of life or incompatible with life. In toxicology and ecotoxicology it refers to physical (e.g. heat, sunlight) or chemica [..]