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Cumulative reduction in BCG viability (cfu) for each matrix formulation (A, B, C) through each stage. BCG–Eudragit matrix composition: (A) Eudragit L100/2 mL PBS/0.9 mL Tween® 80 (0.1% w/v); (B) same as (A) plus mannitol (0.2% w/v); (C) same as (A) plus trehalose (0.2% w/v). * p < 0.05 for pair-wise comparisons of matrices B and C against matrix A.
