Immunohistochemistry staining for CD4+, CD8+, CD11c+, CD163+, CD54+, and CD25+ cells at graft-host junction for different groups.

<p>The grafts treated with the PA microfilms or PA eye drops had less dense and diffuse cell infiltration in comparison with the allogeneic control grafts. The syngeneic grafts were nearly free of immunologic cell infiltration. G: Graft. H: Host. Original magnification ×100. Scale bar: 100 µm.