Abstract: A novel method of screening herbal composition for a pharmaceutically active component of interest (“target component”) comprises: immobilizing a plurality of receptors of interest on a chip; flowing the herbal composition through the chip to allow binding of the target component with the receptors; disassociating the bound target component from the immobilized receptors on the chip; profiling the disassociated target component by HPLC; and identifying the target component based on the HPLC profile of the disassociated target component.

Abstract: A biodegradable ceramic for medical use is disclosed, which comprises calcium hydrogenphosphate (CaHPO4) modified by organic molecules. The organic molecule mentioned above is hexamethylene diisocyanate (HMDI), which is grafted to the calcium hydrogenphosphate through covalent bond. The present invention also relates to a method for preparing the biodegradable ceramics. In addition, the biodegradable ceramic can be used for repair of bone defects. Therefore, the present invention further relates to a method and a device for repair of bone defects, and to a delivery system for the medicine of repair of bone defects.