Technology that enables the use of mobile phones.  It is based on the geographic division of the communication area covered into cells, using a given number of frequencies (or channels), allowing a large number of subscribers to conduct conversations simultaneously.  A mobile phone (or cellular phone) is a bi-directional instrument that can transmit and receive simultaneously.

A global or oval body enclosed in a membrane, found in all cells.  The nucleus contains the genetic material (DNA) of the cell.

A cluster of cells created by uncontrolled division of cells in the brain tissue (neurons, glia, epithelium, etc.).Primary brain tumors are named according to the type of cells that constitute them.In general, and in contrast to other tumors, brain tumors do not tend to metastasize to other organs.

Wireless communications technology (in the 2402-2480 MHz frequency range) enabling connection over short distances between personal end-user devices situated in the proximity of the user, e.g. between mobile phones and hands-free speakers. (Source: IARC-RF, monog,102.2013).

A physiological, biochemical, or behavioral change in a living organism, in the tissue or the cell.

A systematic error leading to incorrect assessment of the actual effect of a certain factor on the outcome (e.g. on the risk of developing a disease).Such an error may be due to deficiencies in the design of the research protocol, in the recruitment of participants, in data gathering, in data analysis, etc.

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The mass of an atomic or subatomic particle or molecule.It is the unit that defines the weight of basic elements in the periodic table.

A segment of the electromagnetic spectrum in the range of wavelengths 10-400 nanometers (nm).  The frequencies of UV light are not visible to the human eye, and exposure to this radiation requires protective measures.  The effect of UV light on public health usually refers to the 100-400nm wavelength range, which is divided into 3 sub-segments:

UVA (315-400nm)

UVB (280-315nm)

UVC (100-280nm)

see under Ultraviolet light.

A small segment of the electromagnetic spectrum in the range of 390-700 nanometers (nm), in the frequency range of 430 -790 Terahertz (THz). Visible light may be seen by the human eye and accounts for vision.