抽象的

Characterisation and classification of cancer causing agents.

Sabry Ayad

Tumour growth is brought about by changes to specific qualities that modify the manner in which our cells capability. A portion of these hereditary changes happen normally when DNA is repeated during the course of cell division. However, others are the aftereffect of natural openings that harm DNA. These openings might incorporate substances, for example, the synthetics in tobacco smoke, or radiation, like bright beams from the sun.