F(ab) fragments are isolated from an antibody containing source by contacting the antibody containing source with a papain-polyacrylamide matrix to produce F(ab) and F(c) fragments which are then passed through an antigen-polyacrylamide gel capable of attracting the F(ab) fragments. F(ab).sub.2 fragments...http://www.google.es/patents/US4849352?utm_source=gb-gplus-sharePatente US4849352 - Antibody purification process
