research Accumulations of Ca/P in the core of hairs from Taklamakan desert mummies 8 citations , May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
research Adaptations in the structure and innervation of follicle‐sinus complexes to an aquatic environment as seen in the Florida manatee (Trichechus manatus latirostris) 46 citations , July 2007 in “Journal of comparative neurology” Manatee whiskers are specially adapted for touch in water.
research Evidence for various calcium sites in human hair shaft revealed by sub-micrometer X-ray fluorescence 31 citations , December 2002 in “Biochimica et biophysica acta. G, General subjects/Biochimica et biophysica acta. General subjects (Online)” The research found two types of calcium in human hair, one that varies among individuals and another that is consistent across people.
research Probing calcium and sulfur distribution and pattern in hairs using micro-proton induced X-ray emission (MPIXE) 1 citations , January 2007 in “中国科学通报:英文版” Women's hair has more sulfur, and black hair has more calcium than white hair.
research Histological Study for Skin of Horse February 2023 in “Mağallaẗ Tikrīt li-l-ʻulūm al-ṣirfaẗ/Tikrit journal of pure science” Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.