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acrosome, chondriosome, coenzyme, complement, cox, cyclooxygenase, decarboxylase, elisa, enzyme-linked-immunosorbent serologic assay, enzymology, gastric juice, immunohistochemistry, lactaid, lactase, lysinemia, lysine intolerance, mitochondrion, nonenzymatic, nsaid, nuclease, oxidase, pancreatin, peroxidase, phosphatase, proenzyme, restriction endonuclease, restriction enzyme, restriction nuclease, secretase, superoxide dismutase, transferase, triphosphopyridine nucleotide, zymase, zymogen