未來趨勢 (FUTURE TRENDS)
毛囊的再生 (regeneration) 與複製 (cloning) 代表著毛髮移植革命性進展的下一步。若能有無限量的毛髮供應，就不再受限於供區毛髮的密度。目前已能以培養的真皮乳頭細胞 (dermal papilla cells) 誘導角質形成細胞的管狀生成 (keratinocyte tubulogenesis)；骨髓與臍帶來源的間質幹細胞 (mesenchymal stem cells) 已被證實可作為毛囊再生的儲庫；而表皮創傷併隨 Wnt 蛋白的上調，可在成年小鼠皮膚中引發毛囊再生。此外，已發現紅血球生成素 (erythropoietin) 可促進真皮乳頭細胞的生長，並延長培養的人類毛囊的生長期 (anagen phase)。最後，目前利用 AGA 小鼠模型進行的研究，應可提供對疾病機轉與治療的洞見。
誌謝 (Acknowledgment)
作者們謹此感謝 Dowling B. Stough, MD 對本章於先前版次中的貢獻。
我們的電子書中另有補充圖片（存取碼見封面內頁）。
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& Co; 2004.
在移植非洲中心型 (Afrocentric) 第 4 型毛髮時，重要的是要注意毛囊的捲曲以及毛髮的 C 形彎曲，會使毛囊的分離稍微更為困難（圖 157.17B）。刀片不能使用直的，而必須加以彎折，才不會橫切到毛囊。此外，移植片可能稍大，需要較大口徑的針具（例如 16 號針）來製作受區孔洞。最後，在膚色較深的皮膚光型病人中，蟹足腫或肥厚性疤痕形成的風險增加，且發生於供區的機會多於受區。在關閉供區傷口前注射 triamcinolone acetonide 懸浮液，可能有助於降低此類疤痕形成的風險。