Bacteria with this property have many proteins displaying the conserved OmpA domain and abundantly contain Braun’s lipoprotein. Fritz Kauffmann pioneered a method of serotyping bacteria with this property based on their O-antigen composition. The biotoxicity of bacteria with this property is conferred by the lipid A portion of cell surface molecules called lipopolysaccharides. Bacteria with this property possess an outer (-5[1])(*) membrane that, in conjunction with the plasma membrane, surrounds the periplasm. In one technique, washing bacteria with this property with alcohol removes Lugol’s iodine and crystal violet from the stain complex. For 10 points, what property is observed in bacteria that appear pink and not purple in a common technique because they do not retain a certain stain? (10[1])■END■