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Representative Masson's trichrome stained sections for the evaluation of wound healing, inflammation and maturity by probiotic patch. (A) Section showing with no granulation tissue and almost absent staining for collagen (grade 1). (B) Shows loose granulation tissue with low collagen (grade 2). (C) Dense granulation tissue with a high concentration of disorganised collagen (grade 3). (D) Dense granulation tissue with bundles of dermal‐type collagen (grade 4).
