Kanamycin sulfate is widely used in microbiology and molecular biology as an antibiotic to inhibit the growth of bacteria in cell cultures. It is particularly effective against Gram-negative and some Gram-positive bacteria, making it a valuable tool in research laboratories for selecting and maintaining genetically modified cells. In clinical settings, it is employed to treat serious infections caused by susceptible bacteria, including tuberculosis, when other antibiotics are ineffective. Additionally, it is used in veterinary medicine to treat bacterial infections in animals. Its ability to disrupt protein synthesis in bacteria makes it a critical component in both therapeutic and experimental applications.