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Figure 2 | BMC Complementary and Alternative Medicine

Figure 2

From: Propolis - based chitosan varnish: drug delivery, controlled release and antimicrobial activity against oral pathogen bacteria

Figure 2

Morphological characterization of films which was formed on tooth surface after application of Chitosan-based Propolis varnishes. SEM pictures of I: blank Chitosan varnish (BCV); II: Propolis varnishes containing 15% of Propolis extract (PCV 15%); III: Propolis varnishes containing 10% of Propolis extract (PCV 10%); and IV: Propolis varnishes containing 5% of Propolis extract (PCV 5%); a, side view; b, expansion of a; c, surface view.

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