To identify the requisite bacterial ligands , studies with isogenic mutants of P . aeruginosa PAK lacking pili , flagella , and the RpoN sigma factor were undertaken .
to identify the requisite bacterial ligands , studies with isogenic mutants of p . aeruginosa pak lacking pili , flagella , and the rpon sigma factor were undertaken .
O O O O B-other_name I-other_name O O O O O O B-mono_cell I-mono_cell I-mono_cell B-mono_cell O B-body_part O B-body_part O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O