NPPA and infection: Jiun-Han Chen et al. found that infection with OmpK36-deficient mutants resulted in increased phagocytosis of KP by immune cells as indicated by an increased number of fluorescently labeled bacteria engulfed, suggesting that the absence of OmpK36 alters the surface structure of the bacterium, potentially modifying its interaction with phagocyte receptors and promoting increased phagocytosis [90].