… such as litmus, pH or pole-finding papers or pre-coated immuno-assay plates. Reagents of this heading may also be … binding of complement, haemagglutination, enzyme-linked immunosorbent assay (ELISA), etc are classified here. …
… (VIII) Bone and similar materials obtained from marine mammals. (IX) Quills of feathers. (X) Shells of …
Not implemented in the Demo version.
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