A substance (or active part thereof) that kills or slows the growth of bacteria.
A role played by a chemical compound which is known to induce a process of carcinogenesis by corrupting normal cellular pathways, leading to the acquistion of tumoral capabilities.
A role played by a chemical agent which exhibits the capability of occupying space between DNA base pairs due to particular properties in size, shape and charge. Intercalation of chemical compounds in DNA helix can result in replication errors (shift, mutation) or DNA damages.
A substance used locally on humans and other animals to destroy harmful microorganisms or to inhibit their activity (cf. disinfectants, which destroy microorganisms found on non-living objects, and antibiotics, which can be transported through the lymphatic system to destroy bacteria within the body).
A dye used in microscopic or electron microscopic examination of cells and tissues to give contrast and to highlight particular features of interest, such as nuclei and cytoplasm.