Refers to the ability of certain chemicals or mediator cells to destroy living cells by inducing either accidental cell death (necrosis) or programmed cell death (apoptosis). Given this information, the ability to accurately measure cytotoxicity can prove to be a very valuable tool in identifying compounds that might pose certain health risks to humans. Furthermore, by determining the cytotoxicity levels of cancer cells themselves, new drugs can be developed to hinder the proliferation of cancer cells by disrupting their genetic material or by blocking the nutrients that the cells need to survive. [Adapted from :]