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Related Concept Videos

Accessory Structures of the Skin: Hair Growth and Types01:20

Accessory Structures of the Skin: Hair Growth and Types

Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Multipotency and Niche of Bulge Stem Cell01:06

Multipotency and Niche of Bulge Stem Cell

A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...

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Related Experiment Video

Updated: May 14, 2026

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
03:22

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia

Published on: January 27, 2018

Hair transplantation.

Marc R Avram1

  • 1Weill Cornell Medical College, Cornell University, New York, New York, USA. mavram@dravram.com

Cutis
|February 16, 2013
PubMed
Summary

Modern hair transplantation uses follicular units for natural results in men and women experiencing hair loss. Dermatologists can perform this procedure, focusing on candidate selection and advanced techniques.

Area of Science:

  • Dermatology
  • Surgical Procedures

Background:

  • Historically, hair transplantation (1960s-1990s) used large grafts, leading to unnatural appearances.
  • Advancements over the last 15 years have shifted to follicular unit transplantation (FUT).

Purpose of the Study:

  • To provide an overview of hair transplantation candidate selection.
  • To describe state-of-the-art hair transplantation techniques.

Main Methods:

  • Review of historical and current hair transplantation techniques.
  • Focus on follicular unit transplantation (FUT) methodology.

Main Results:

  • Follicular unit transplantation (FUT) creates consistently natural-looking results.
  • Modern techniques offer improved aesthetic outcomes for both men and women.

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Surgical Approach to Full Soft Tissue Face Allograft Procurement for Vascularized Composite Allotransplantation

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Last Updated: May 14, 2026

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
03:22

Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia

Published on: January 27, 2018

Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration
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Rapid Genetic Analysis of Epithelial-Mesenchymal Signaling During Hair Regeneration

Published on: February 28, 2013

Surgical Approach to Full Soft Tissue Face Allograft Procurement for Vascularized Composite Allotransplantation
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Surgical Approach to Full Soft Tissue Face Allograft Procurement for Vascularized Composite Allotransplantation

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Conclusions:

  • Hair transplantation is a dermatologic surgical procedure that should be performed by dermatologists.
  • Current techniques ensure natural-looking outcomes for patients with hair loss.