Silk fibers from the silkwormBombyx morihave
been used commercially as biomedical sutures for
decades but some biocompatibility problems have
been reported during the past 20 years[1–3]. However, after silk sericin is properly extracted, silk
fibers and regenerated silk fibroin films exhibit comparable biocompatibilityin vitro andin vivo with
other commonly used biomaterials such as polylactic acid and collagen [1,4]. Regenerated silk fibroin
is also biodegradable [5–7], and a number of cells,