Treatment with Hyaluronic Acid and Collagen-Polyvinylpyrrolidone Improves Extracellular Matrix Assembly for Scarring after Tracheal Resection

Figure 8

Immunohistochemical detection of collagen type II in the tracheal scars posttreatment with WHMs. Light red immunostaining shows mild expression in all groups: (a) presurgery samples; (b) group I (control); (c) group II (hyaluronic acid); (d) group III (collagen-PVP); (e) group IV (mixture of hyaluronic acid+collagen-PVP); (f) group V (mitomycin C). (g) Tracheal tissue as a negative control. (h) The canine matrix producing carcinoma of the breast was the positive control.

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