si_0952 Cytolethal_distending_toxin_of_Campylobacter_jejuni Cytolethal distending toxin subunit A si_0952 Cytolethal_distending_toxin_of_Campylobacter_jejuni Cytolethal distending toxin subunit B si_0952 Cytolethal_distending_toxin_of_Campylobacter_jejuni Cytolethal distending toxin subunit C