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Stages of the PMN response to conjunctival epithelial cells infected by chlamydiae. (A–B) (1) PMNs accumulating immediately behind a barrier of infected epithelial cells (arrows). (2) The epithelium loses integrity. (3) PMNs break through the barrier and are released onto the surface, resulting in the release of damaged epithelial cells (arrowheads). The figure is reproduced from Rank et al. [56] with the permission of Oxford University Press.
