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August 1980 in “Journal of Cutaneous Pathology” Rhodamin B stain is inconsistent for keratin in skin samples.
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January 1994 in “PubMed” 2 citations
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September 1978 in “Anatomia Histologia Embryologia” Alkaline phosphatase activity in Beagle dog hair follicles is weakest in anagen and strongest in telogen.
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May 1972 in “Journal of Biological Chemistry” Transglutaminases work through a ping-pong mechanism, and human plasma and platelet transglutaminases have similar catalytic subunits.
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April 2014 in “Dermatologic Therapy” Sulfotransferase in hair follicles helps predict how well minoxidil works for female hair loss.
12 citations
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December 2017 in “Scientific reports” The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.
January 2024 in “Biotechnology advances” Bioassays help find useful compounds in nature for making medicines, supplements, and cosmetics.
March 2022 in “Benha Journal of Applied Sciences” ULBP3 levels are higher in Tinea capitis patients and may help predict the disease's severity.
January 2016 in “Huanjing yu Jiankang Zazhi” September 2017 in “Hair transplant forum international” Biotin is popular for hair loss, but there's little scientific proof it works.
17 citations
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January 2013 in “Talanta” A new method was developed to accurately measure enzyme activity related to prostate health.
January 2023 in “Research Square (Research Square)” Hair glycation could be a reliable non-invasive indicator of blood glucose control, but its use is limited by factors like sample collection and hair treatments.
4 citations
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January 2002 in “Indian Journal of Pharmaceutical Sciences” A new method accurately measures finasteride in tablets using color change and light absorption.
June 2025 in “Rapid Communications in Mass Spectrometry” The new method improves protein extraction and analysis in hair, aiding biomedical and forensic work.
10 citations
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November 2017 in “Letters in drug design & discovery” Researchers identified promising inhibitors for the BRD4 protein, including finasteride and amentoflavone.
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December 2007 in “Human Reproduction Update” In vitro bioassays are better than traditional methods for measuring androgen activity but aren't ready for routine use yet.
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April 2011 in “Rapid communications in mass spectrometry/RCM. Rapid communications in mass spectrometry” Analyzing hair with this method can help understand and monitor scalp conditions and treatment effects.
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August 2013 in “International Journal of Cosmetic Science” The study suggests that a new protease inhibitor can make hair harder to pull out, potentially reducing hair loss.
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March 2022 in “Molecules” 5-Bromo-3,4-dihydroxybenzaldehyde could potentially help hair growth by activating certain cell pathways and inhibiting others.
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March 2012 in “Mass spectrometry letters” The S9 fraction with GC-IDMS is effective for measuring 5α-reductase activity.
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May 1992 in “Journal of Investigative Dermatology” Minoxidil sulfotransferase is a marker of keratinocyte differentiation and may play a role in hair growth.
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September 2005 in “Eclética Química” Quick, accurate minoxidil measurement in hair loss products using photometric flow titration.
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September 1999 in “Talanta” New method measures minoxidil concentration faster, more accurately, and automatically.
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January 1987 in “Journal of Investigative Dermatology” Coal tar shampoo increases enzyme activity in hair follicles, enhancing carcinogen binding to DNA.
November 2022 in “Bioengineering” The method can test hair growth products using a lab-made hair-like structure that responds to known treatments.
September 2017 in “BAUST Journal” February 2023 in “American Journal of Biomedical and Life Sciences” Hair analysis can effectively assess nutritional status.
December 2023 in “Forensic science international. Genetics” The RapidHIT ID system can effectively get DNA profiles from hair roots with enough cells.
January 2002 in “HAL (Le Centre pour la Communication Scientifique Directe)” The enzyme system in hair follicles is similar to the liver's and is inhibited by certain substances.
July 2025 in “Journal of Investigative Dermatology” BrdU speeds up hair follicle aging and reduces hair quality.