The Effect of Autologous Activated Platelet Rich Plasma (AA-PRP) Injection on Pattern Hair Loss: Clinical and Histomorphometric Evaluation

Figure 5

PRP treatment increases the thickness of epidermis and the number of follicles of hair skin. (a) and (b): representative microphotographs of hair skin epidermis at baseline (a) and after PRP treatment (b). (c): bar graph of epidermis thickness. (d) and (e): representative microphotographs of dermal hair follicles at baseline (d) and after PRP treatment (e). (f): bar graph of the number of hair follicles/mm² at baseline and after PRP treatment; * indicates 𝑃<0.05. Original magnification: (a) and (b): 200x and (d) and (e): 100x.

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