1. Cell-mediated cytotoxicity, the killing of cells by effector T cells or NK cells. The target cells may express a particular antigen (cytotoxic T-cell killing) or be marked with antibody–antigen complexes (antibody-dependent cell-mediated cytotoxicity).
2. Carboxymethylcellulose, a negatively charged form of cellulose used as a cation-exchange resin in ion-exchange chromatography and as a thickening agent in a range of products (food, paint, drilling mud, etc.).