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This heading covers :
(A) Human blood (e.g., human blood in sealed ampoules). (B) Animal blood prepared for therapeutic, prophylactic or diagnostic uses.
Animal blood not prepared for such uses falls in heading 05.11. (C) Antisera, other blood fractions and immunological products, whether or not modified or obtained by means of biotechnological processes.
These products include : (1) Antisera and other blood fractions, whether or not modified or obtained by means of biotechnological processes.
Sera are the fluid fractions separated from blood after clotting.
The heading covers, inter alia, the following products derived from blood : "normal" sera, human normal immunoglobulin, plasma, thrombin, fibrinogen, fibrin and other blood coagulation factors, blood globulins, serum globulins, and haemoglobin. This group also includes modified haemoglobins obtained by means of biotechnological processes, e.g., cross-linked haemoglobins such as hemoglobin crosfumaril (INN), hemoglobin glutamer (INN) and hemoglobin raffimer (INN).
The heading further includes blood albumin (e.g., human albumin obtained by fractionating the plasma of whole human blood), prepared for therapeutic or prophylactic uses.
Antisera are obtained from the blood of humans or of animals which are immune or have been immunised against diseases or ailments, whether these are caused by pathogenic bacteria and viruses, toxins or allergic phenomena, etc. Antisera are used against diphtheria, dysentery, gangrene, meningitis, pneumonia, tetanus, staphylococcal or streptococcal infections, snake bite, vegetable poisoning, allergic diseases, etc. Antisera are also used for diagnostic purposes, including in vitro tests. Specific immunoglobulins are purified preparations of antisera.
The heading does not cover blood albumin not prepared for therapeutic or prophylactic uses (heading 35.02) or globulins (other than blood globulins and serum globulins) (heading 35.04). The heading also excludes medicaments which are not separated from the blood but which in some countries are described as "sera" or "artificial sera "; they include isotonic solutions based on sodium chloride or other chemicals and suspensions of pollen which are used against allergic diseases. (2) Immunological products, whether or not modified or obtained by means of biotechnological processes.
Products used for diagnostic or therapeutic purposes and for immunological tests are to be regarded as falling within this product group. They can be defined as follows : (a) Monoclonal antibodies (MAB) - specific immunoglobulins from selected and cloned hybridoma cells cultured in a culture medium or ascites. (b) Antibody fragments - parts of an antibody protein obtained by means of specific enzymatic splitting. (c) Antibody conjugates and antibody fragment conjugates - conjugates which contain at least one antibody or an antibody fragment. The simplest types are a combination of the following : (ⅰ) antibody - antibody; (ⅱ) antibody fragment - antibody fragment; (ⅲ) antibody - antibody fragment; (ⅳ) antibody - other substance; (ⅴ) antibody fragment - other substance.
Conjugates of types (ⅳ) and (ⅴ) include, for example, enzymes (e.g., alkaline phosphatase, peroxidase or betagalactosidase) or dyes (fluorescin) covalently bound to the protein structure, which are used for straightforward detection reactions.
This heading also covers interleukins, interferons (IFN), chemokines and certain tumor necrosis factors (TNF), growth factors (GF), hematopoietins and colony stimulating factors (CSF). (D) Vaccines, toxins, cultures of micro-organisms (excluding yeasts) and similar products.
These products include : (1) Vaccines.
The most typical vaccines are prophylactic preparations of microbial origin containing either viruses or bacteria suspended in saline solutions, oil (lipovaccines) or other media. These preparations have usually been treated to reduce their toxicity without destroying their immunizing properties.
Other vaccines include recombinant vaccines, peptide vaccines and carbohydrate vaccines. These vaccines generally contain an antigen, a recognised part of an antigen or a gene coding for a recognised part of an antigen (peptides, recombinants or conjugates of protein and others). The "recognised part of an antigen" is the part of an antigen which triggers the immunological response in the organism. Many of these vaccines target a specific virus or bacterium. These vaccines are used for prophylactic or therapeutic purposes.
The heading also covers mixtures consisting of vaccines or toxoids (such as Diphtheria, Tetanus and Pertussis (DPT) vaccine). (2) Toxins (poisons), toxoids, crypto-toxins and anti-toxins. (3) Cultures of micro-organisms (excluding yeasts). These include ferments such as lactic ferments used in the preparation of milk derivatives (kephir, yogurt, lactic acid) and acetic ferments for making vinegar; moulds for the manufacture of penicillin and other antibiotics; and cultures of micro-organisms for technical purposes (e.g., for aiding plant growth).
Milk or whey containing small quantities of lactic ferments is classifiable in Chapter 4. (4) Virus, human, animal and vegetable and anti-virus. (5) Bacteriophage.
The heading also includes diagnostic reagents of microbial origin, other than those provided for in Note 4 (d) to this Chapter - see heading 30.06. It does not cover enzymes (rennet, amylase, etc.) even if of microbial origin (streptokinase, streptodornase, etc.) (heading 35.07) nor dead single-cell micro-organisms (other than vaccines) (heading 21.02). (E) Diagnostic kits.
Diagnostic kits are classified here when the essential character of the kit is given by any of the products of this heading. Common reactions occurring in the use of such kits include agglutination, precipitation, neutralization, binding of complement, haemagglutination, enzyme-linked immunosorbent assay (ELISA), etc. The essential character is given by that single component which governs to the greatest extent the specificity of the test procedure.
The products of this heading remain classified here whether or not in measured doses or put up for retail sale and whether in bulk or in small packings.
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clhs@clhs.co.kr 
070-4214-8300