Support based on cross-linked gelatin and MEDIA for controlled release of physiologically active substance

摘要

The present invention relates to a crosslinked gelatin support, in which a surface of a crosslinked gelatin is negatively charged and has a zeta potential in ethanol of from −3 to −50 mV, and a support for controlled release of a physiologically active substance, including: the crosslinked gelatin support; and a physiologically active substance adsorbed and retained on and/or inside the crosslinked gelatin support.