T6SS-dependent antibacterial activity (top) and Hcp secretion (bottom) of wild-type clinical isolates SJC1039 and SJC1042 and derivatives with an exchanged betR and/or inactive T6SS (ΔtssE). SJC1039 BetR1042 indicates SJC1039 with the betR allele from SJC1042 and vice versa.
