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January 1992 in “DNA sequence” Researchers found a non-functional sheep keratin gene due to mutations.
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June 2014 in “International Journal of Cosmetic Science” Glyoxylic acid is a safer alternative to formaldehyde for hair straightening and effectively changes hair structure.
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April 2018 in “Journal of Investigative Dermatology” Glycogen metabolism is important for energy and processes in human hair follicles, and hair follicles may produce glucose from lactate.
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August 2007 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.