계란 속껍질 ( 란각막) Eggshell Membrane 게란속껍질 ( Eggshell Membrain) Eggshell Membrane is a unique biological matrix that is composed of major joint constituents, including chondroitin, glucosamine, hyaluronic acid, collagen, and other proteins. 계란속껍질 ( 난각막) 은 생물학적 으로 독특하게 관절의 주요구성 성분 즉 콘드로이친, ..