This heading covers :
(A) Glands and other organs of animal origin for organo-therapeutic uses (e.g., the brain, spinal cord, liver, kidneys, spleen, pancreas, mammary glands, testes, ovaries), dried, whether or not powdered. (B) Extracts of glands or other organs or of their secretions for organo-therapeutic uses, obtained by solvent extraction, precipitation, coagulation or by any other process. These extracts may be in solid, semi-solid or liquid form, or in solution or suspension in any media necessary for their preservation. The organo-therapeutic extracts of secretions of glands or organs include bile extract. (C) Heparin and its salts. Heparin consists of a mixture of complex organic acids (muco-polysaccharides) obtained from mammalian tissues. Its composition varies according to the origin of the tissues. Heparin and its salts are used chiefly in medicine, especially as blood anti-coagulants. They remain classified here whatever their degree of activity. (D) Other human or animal substances prepared for therapeutic or prophylactic uses and which are not specified or included in more specific headings of the Nomenclature, including : (1) Red bone marrow preserved in glycerol. (2) Snake or bee venom put up in dried flakes and the non-microbial crypto-toxins formed from such venom. These products ((1) and (2) above), when put up as medicaments in measured doses or in forms or packings for retail sale, fall in heading 30.04. (3) Bone, organs and other human or animal tissue, whether living or preserved, suitable for permanent grafting or implantation, put up in sterile packings which may bear indications as to method of use, etc. The heading excludes : (a) Glands and other animal organs, fresh, chilled, frozen or otherwise provisionally preserved (Chapter 2 or 5). (b) Bile, whether or not dried (heading 05.10). (c) Separate chemically defined compounds and other products of Chapter 29 obtained by the treatment of extracts of glands or other organs, e.g., amino-acids (heading 29.22), vitamins (heading 29.36), hormones (heading 29.37). (d) Human blood, animal blood prepared for therapeutic, prophylactic or diagnostic uses, and antisera (including specific immunoglobulins) and other blood fractions (e.g., "normal" sera, human normal immunoglobulin, plasma, fibrinogen, fibrin) (heading 30.02). (e) Products having the character of medicaments of heading 30.03 or 30.04 (see corresponding Explanatory Notes). (f) Globulins and globulin fractions (other than those of blood or serum) not prepared for therapeutic or prophylactic use (heading 35.04). (g) Enzymes (heading 35.07).
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