Assertion: pel polysaccharide | /r/HasProperty | pao1 δwspf δpsl p bad pel
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text: As a control, a P. aeruginosa strain engineered to overexpress the Pel polysaccharide, PAO1 ΔwspF Δpsl P BAD pel [ 31 ], and its isogenic ΔpelF mutant, were also analyzed ( Fig 3A ).