Fibroblast proliferation dependence on insonification of low intensity ultrasounds at different duty cycles was discussed. The migration and formation of fibroblasts in an injury tissue is a crucial procedure for the process of wound healing. The fibroblast may activate the synthesis of collagen and finally repair the damage tissues with scar tissues. Fibroblasts attribute to any rapid production of connective tissue matrix, such as the development of embryo and tissue culture.
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