This is amino acids 427 to 441 fragment belongs to the FliC, serotype a of the S. FliC epitope recognized by a CD4+ T cell from naturally infected C57BL/6 mice is located in a region common to a number of distinct Salmonella serovars such as the S. paratyphi.This dominant epitope is contained within the constant C-terminus of FliC. Synonym: FliC,Serotype a (427-441) S.paratyphi A