Fibril and hence the whole muscle. Elastin is a fibrous protein common in various soft tissues, like skin, blood vessels and lung tissue. Each monomer connects with each other, forming a 3D network, with ability to endure over 200% strain before deformation. Keratin is a structural protein mainly found in hair, nails, hooves, horns, quills. Basically keratin is formed by polypeptide chains, which coil into α-helices with sulfur cross-links or bond into β-sheets linked by hydrogen bonding. β-keratin, which is tougher than α-conformation, is more common in birds and reptiles. Resilin is an elastomeric insect protein, consisting of both α-helices and
History of removal of leg and underarm hair in the United States American women aged 15–44 routinely shaved their legs. A century after these ad campaigns started, removal of leg and underarm hair by women in the U.S. is tremendously pervasive and lack of its removal is taboo. An estimated 80%-99% of American women today remove hair from their bodies. Celebrity unshaven armpit appearances started to make headlines. For example, this was the case with actress Julia Roberts who sported unshaven underarms at the Notting Hill movie premiere in 1999. Anne Robinson, a presenter British television show The Weakest Link, received a similar reaction after she revealed underarm hair on air in