Biological or health effect with symptoms that develop rapidly, due to exposure to a substance or agent. These symptoms may or may not subside when the exposure stops.

A mandatory limit on a particular electromagnetic field exposure (e.g. time-averaged exposure at a frequency of 2450 MHz). Protection against established adverse health effects requires that basic restrictions are not exceeded.

A tumour or growth that is not cancerous i.e. it does not spread to surrounding tissue or other parts of the body. (See also MedlinePlus definition)

Any systematic error in a study that that can lead to conclusions that are different from the truth.

An agent (chemical, physical or biological) directly involved in the initiation or promotion of cancer. (See also Wikipedia definition)

A person (or animal) in a study with a medical condition (or other outcome) of interest. (See case-control study)

A type of epidemiological study that compares subjects who have a disease or condition (the cases) with similar subjects who do not have the disease or condition (the controls). In a case-control study the medical and lifestyle histories of the subjects in each group are investigated to learn what factors may be associated with the disease or condi [..]

Clinical evaluation and history of a patient. Case reports are useful when the disease is uncommon. (See also Wikipedia definition)

Broadly, causality is the relationship between a cause and the consequential effect. In biology and medicine cause is the exposure and effect is the resulting disease or condition. It is important to realise that even if an association is found between an exposure and a disease the connection cannot automatically be interpreted as causal. An associ [..]

Biological or health effect with symptoms that develop slowly, due to long and continuous exposure to a substance or agent e.g. cancer.