Kanamycin solution is widely used in microbiology and molecular biology for its antibacterial properties. It is commonly employed to select and maintain bacterial strains that have been genetically modified to carry resistance genes. In cell culture, it helps prevent contamination by inhibiting the growth of unwanted bacteria. Additionally, kanamycin solution is utilized in research to study antibiotic resistance mechanisms and to screen for recombinant DNA in cloning experiments. Its effectiveness against a broad spectrum of Gram-negative and some Gram-positive bacteria makes it a valuable tool in laboratory settings.