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This narrative review concluded that autologous platelet concentrates, particularly L-PRF, effectively enhance bone and soft tissue healing in periodontal regenerative procedures, with L-PRF demonstrating the most convincing results and ease of use.

This study found that 40 nm nanoparticles can effectively penetrate into hair follicles and epidermal Langerhans cells in human skin samples, potentially enabling efficient transcutaneous vaccine delivery.

In this study, transcutaneously applied nanoparticles and viral vectors were shown to penetrate murine hair follicles, internalize in antigen-presenting cells, and induce immune responses, suggesting a promising approach for vaccine delivery.

This case report presents the first evidence of significant antigen presenting cells around hair follicles in a patient with alopecia due to active systemic lupus erythematosus.

This study suggests that autologous platelet concentrates may improve inflammatory activity, disease control, and hair regrowth in primary cicatricial alopecia, but the evidence is limited by small sample sizes and study quality.