Figure. Initial GCF neutrophil responses in AP were significantly amplified compared with those in CP. (A) Myeloperoxidase activity (MPO); (B) beta-N-acetyl-hexosaminidase activity (Beta-NAH); (C) cathepsin D (CD); and (D) elastase-alpha-1-proteinase inhibitor complex (Alpha-1-EPI). PRE = outset. 6 M = 6 mos post-therapy. The post-treatment levels remained significantly different between AP and CP (not CD and Alpha-1-EPI).