sentence: Since T6SS confers hemolytic activity in some bacteria ( Bleumink-Pluym et al ., 2013 ; Zong et al ., 2019 ) , we analyzed this phenotype incubating red blood cells with wild-type E. cloacae , Δ clpV1 pMPM-T3 , Δ clpV1 pT3-ClpV1 , Δ clpV2 Δ hcp1 pMPM-T3 , and Δ hcp1 pT3-Hcp1 mutants .