Neutrophil extracellular traps, or NETs for short, are networks of cell-free DNA and proteins that are ejected by activated neutrophil granulocytes. They are capable of trapping pathogens, attacking them with antimicrobial proteins and enzymes such as elastase and cathepsin G and at the same time activating the immune system. Granulocytes use NETs to attack pathogenic microorganisms. The process of activation and release of NETs is abbreviated as NETosis. For further information see below Neutrophil Extracellular Traps.