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pH values of the SBF resulting of the pellets immersion (BG, BGSr1, BGSr2, BGMg1 and BGMg2) for 12 h, 24 h, 48 h, 96 h, 336 h and 672 h. Green parenthesis: Extracts pH without SBF medium change; Purple parenthesis: Extracts pH with SBF medium change.
