Furthermore, he made some attempts at anastomosis of blood vessels and a number of experiments to determine if trypsin, pancreatic acid and pepsin would liquefy, in situ, sloughs and coagula that were difficult to remove from cavities. And he actually found out that pepsin acted best and was able to turned blood clot into semi-fluid form. Moreover, pepsin was useful since it would also remove dead bones (after being decalcified with hydrochloric acid), without showing any notable effects upon living bones.