Ключевые слова: accident, aging, aging process, anatomy, animal artery, animal blood vessel, animal body part, animal bone, animal skeleton, artery, atherosclerosis, biology, bone, calcification, closeup, color enhanced, colour manipulation, december 2013 release, diagnostic, digitally generated image, disciplines, emergencies and disasters, hardening, healthcare, healthcare and medicine, human artery, human blood vessel, human bone, human skeleton, imaging, life science, medical scan, natural science, no people, nobody, numeral, orthographic symbol, plain background, problem, problems, radiograph, science, scrutiny, skeleton, studio shot, symbol, vertical, white background, xray,