Surgical suture father of medicine, Hippocrates, described suture techniques, as did the later Roman Aulus Cornelius Celsus. The 2nd-century Roman physician Galen described gut sutures. In the 10th century, the catgut suture along with the surgery needle were developed by Abulcasis. The catgut suture was similar to that of strings for violins, guitar, and tennis racquet and it involved harvesting sheep intestines. Joseph Lister endorsed the routine sterilization of all suture threads. He first attempted sterilization with the 1860s "carbolic catgut," and chromic catgut followed two decades later. Sterile catgut was finally achieved in 1906 with iodine treatment. The next great leap
Setar Setar The Setar (, from ', meaning "three" and ', meaning "string") is an Iranian musical instrument. It is a member of the lute family, which is played with the index finger of the right hand. Two and a half centuries ago, a fourth string was added to the Setar which most of the time has the same tone of the bass string. It has 25–27 moveable frets which are usually made of animal intestines or silk. Setar covers about 2 and a half scale (depending on the length the handle). some musicians even use its different strings like chords