Ethidium bromide is a fluorescent compound commonly used in molecular biology laboratories. It intercalates between the bases of DNA, allowing researchers to visualize DNA fragments during gel electrophoresis. When exposed to ultraviolet light, ethidium bromide emits a bright orange fluorescence, making it easier to identify and analyze DNA samples. Although effective for DNA visualization, ethidium bromide is considered a potential mutagen and is hazardous to human health. Proper safety precautions, such as wearing gloves and using protective eyewear, are essential when handling this chemical to minimize exposure and ensure laboratory safety.