RO60 and systemic lupus erythematosus: Molecular mimicry could play an important role in SSj pathogenesis, as some oral commensals such as Campnocytophaga ochraceaea along with other gut or skin bacteria contain peptides that can activate T cells reactive to Ro60, an autoantigen in SSj and systemic lupus erythematosus (SLE), in order to activate the B cells [109].