New unified nomenclature for the flagellar genes of Escherichia coli and Salmonella typhimurium.

As research into the flagellar gene systems of Escherichia and Salmonella typhimurium has progressed, their complexity proved to be far greater than originally imagined. , close to 40 genes are known to be involved in the gene systems of both species (see, e.g., reference 2), them second only to the ribosomal gene system in .