Michael Sand gives the reader an overview ofcurrent techniques in expression profiling of miRNAs and their maturationmachinery in the skin. This book is a postdoctoral thesis on miRNAs incutaneous malignant melanoma and non-melanoma skin cancer with a focus on themiRNA processing machinery and miRNA expression profiling. The researchpresented in this book was performed in the Dermatologic Surgery Section at theDepartment of Dermatology, Venereology and Allergology of the Ruhr-UniversityBochum, Germany and gives the reader an overview of current techniques inexpression profiling of miRNAs and their maturation machinery in the skin.