Artificial organ almost always preceded by extensive experiments with animals. Initial testing in humans is frequently limited to those either already facing death or who have exhausted every other treatment possibility. Artificial arms and legs, or prosthetics, are intended to restore a degree of normal function to amputees. Mechanical devices that allow amputees to walk again or continue to use two hands have probably been in use since ancient times, the most notable one being the simple peg leg. Since then, the development of artificial limbs has progressed rapidly. New plastics and other materials, such as carbon fiber have allowed artificial limbs
Journal of Molecular Medicine Journal of Molecular Medicine The Journal of Molecular Medicine is a monthly, peer-reviewed, scientific journal published by Springer Science+Business Media. It covers all aspects of human biology and pathophysiology. The emphasis is on the progress and precision now possible in the understanding, prevention, diagnosis and treatment of human diseases. The employment of molecular biology and gene technology has enhanced the understanding of human diseases and has created a new branch of research known as "molecular medicine". The journal is the continuation of the "Klinische Wochenschrift" ("Journal for Clinical Medicine") established in 1864 and published by Springer for the "Gesellschaft Deutscher