Explanatory notes
… uses (e.g., the brain, spinal cord, liver, kidneys, spleen, pancreas, mammary glands, testes, ovaries), … when put up as medicaments in measured doses or in forms or packings for retail sale, fall in heading 30.04 . (3) Bone, … for permanent grafting or implantation, put up in sterile packings which may bear indications as to method of use, …