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Key words: transforming growth factor-β, chondrocytes, anionic glycoconjugate synthesis.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Mots clés : facteur de croissance transformant β, chondrocytes, synthèse d'un glycoconjugué anionique.