Fig. 1From: The impact of sseK2 deletion on Salmonella enterica serovar typhimurium virulence in vivo and in vitroIdentification of the ΔsseK2 mutant by PCR (polymerase chain reaction). M: marker (DL2000); 1: negative control; 2: WT; 3: single-crossover ΔsseK2 mutant; 4: double-crossover ΔsseK2 mutantBack to article page