DNAase is widely used in molecular biology and biotechnology for applications involving the breakdown of DNA. It is essential in experiments where the removal of DNA is necessary to isolate RNA, ensuring accurate results in RNA analysis. In cell culture, DNAase is employed to prevent contamination from extracellular DNA, maintaining the purity of the sample. It is also used in the preparation of protein extracts, where DNA contamination can interfere with downstream processes. Additionally, DNAase plays a role in medical treatments, such as reducing the viscosity of sputum in patients with cystic fibrosis, making it easier to clear airways. Its ability to degrade DNA makes it a valuable tool in research, diagnostics, and therapeutic applications.