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This chapter reviews the critical importance of the follicle placement process in hair transplantation but presents no new clinical findings.

This article reviews advances in hair restoration techniques, highlighting the rise of follicular unit excision (FUE) as the dominant method over strip harvesting but also noting concerns about untrained practitioners and resulting complications.

This study found that the presented technique for hair restoration surgery reduces procedure time and limits damage to follicular units, achieving excellent results in creating desired hairstyles.

This article discusses various issues and controversies in hair transplantation, including ethical considerations, the debate between follicular unit transplantation and excision, the concept of a safe donor area, the use of platelet-rich plasma, and the minimum qualifications needed for practitioners.

This survey estimates that the number of follicular units with "permanent" hair available for transplant varies based on hair density and projected male pattern baldness type, providing guidelines for realistic surgical goals.

This study observed that actual harvested grafts in hair transplantation yielded more 1-hair follicular units and fewer 3-hair follicular units than originally estimated, with older age and multiple procedures limiting donor scalp harvesting.

Various techniques and tools for hair restoration were presented in 1998, including a mathematical model for donor area, use of lasers in surgery, methods for controlling grafted hair direction, and ways to increase graft yield. Satisfaction rates were around 39%, and studies showed trauma and dehydration can damage hair follicles.

This report details a refined hair transplantation method called direct no-shave follicular unit excision (DNS FUE), which avoids donor-site shaving and minimizes follicular trauma while yielding high patient satisfaction.

This study found that overexpressing thymosin beta-4 in transgenic cashmere goats could potentially increase cashmere yield by boosting the number of secondary hair follicles.

In this case report, eyelash transplantation with leg hair resulted in less frequent maintenance and no need for perming compared to using nape hair donor sources.

This study found that an enzymatic digestion method for isolating hair follicle stem cells from scalp specimens yielded 5.3 times more epithelial cells than explant cultures, while supporting comparable cell functionality, offering a promising technique for tissue engineering and regenerative medicine.

In this case study, a successful allogeneic hair transplantation was performed using follicles from a kidney transplant donor on a severely bald recipient already on long-term immunosuppressive therapy, suggesting a potential new option for select patients with donor supply limitations.

In this study, researchers accomplished the total synthesis of calanthoside, noted for its strong proliferative effects on human hair follicle dermal papilla cells, using a seven-step process from anthranilic acid with a 43% overall yield.

This project report reviews six experimental 3D bioprinting methods for cultivating artificial hair follicles, noting significant challenges such as method complexity, low output, and delayed approval for human trials, while proposing a potential solution for creating a permanent hair system on the scalp.

This study found that the RapidHIT™ ID system can successfully obtain DNA profiles from single hair roots, particularly those with high nuclei counts.

This article describes refined techniques in facial hair transplantation for increasing demand in restoring eyebrow density in women and achieving fuller beards in men, without presenting new clinical results.

This study found that both follicular unit transplantation (FUT) and follicular unit extraction (FUE) are safe and effective for female pattern hair loss, with FUE offering broader indications and higher patient satisfaction.

This study found that using a specific donor row configuration with suturing improves both short-term and long-term scarring, allowing 10-15% more grafts to be taken while maintaining finer donor scars.

This article discusses the unsightly scars left in the donor area after follicular unit transplantation and highlights the need for studies on cosmetic improvements, but it reports no new research findings.

This case series reports that beard hair can be used effectively as an adjunct donor site for hair transplantation in severe androgenic alopecia, with minimal complications observed.

This study found that among Korean males with male pattern baldness, hair loss mostly progresses within 6 cm from the parietal whorl towards the occipital side.

In this study, cashmere goats engineered to overexpress the Tβ4 gene in hair follicles produced more cashmere, indicating that Tβ4 promotes secondary hair follicle development and enhances yield.

This article reviews methods for managing the donor area in hair restoration surgery to minimize scarring and reports no new results.

This article discusses various techniques to achieve a cosmetically attractive single donor scar in hair restoration surgery, reporting no new clinical findings.

This study found that the survival of transplanted transected hair follicles is related to the level of transection, but their growth at the recipient site is not satisfactory, leading to a recommendation against transplanting sectioned parts.

This study found that trichoscopic digital imaging is a safe and accurate method for assessing the donor area in patients undergoing hair transplantation, helping to plan graft utilization based on hair density and follicular unit measurements.

This study found that a centrifugation protocol of 1300 rpm/246 g for 20 minutes followed by 1600 rpm/373 g for 20 minutes achieved the highest platelet yield in platelet-rich plasma.

This article presents techniques that help hair restoration surgeons achieve aesthetically pleasing single donor scars after multiple surgeries, enhancing the viability of the single-scar technique.

This study found no significant difference in polycystic ovary syndrome prevalence between lesbian and heterosexual women seeking artificial insemination, nor in their fertility rates.

In this study, researchers developed a new method called Enriched-GF, which enhances growth factor recovery from platelet concentrates through a combination of glass bead activation, freeze-thaw cycling, and calcium stimulation, outperforming conventional methods by providing higher and more consistent yields for regenerative medicine applications.