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Antibacterial evaluations of PVA/marjoram and PVA/marjoram/kaolin composite sponges against B. cereus and E. coli compared to the pure PVA sponge adopting (a) growth turbidity method and (b) plate count method to determine the percentage of bacteria viability. Results are depicted as means ± SD (n = 5) (*** p < 0.001, and (ns) points to non-significant difference).
