title: Clonal relationships among naturally occurring nicotinamide-requiring Salmonella typhimurium.
mesh_terms: D009536:Niacinamide / Q000378:metabolism*; D012483:Salmonella Phages / Q000235:genetics; D012486:Salmonella typhimurium / Q000235:genetics*; D013045:Species Specificity; D014161:Transduction, Genetic
chemical_list: D009536:Niacinamide