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Alkaloid-based nanodrug delivery systems: An emerging strategy against drug-resistant bacterial wound infections - ScienceDirect https://onlinelibrary.wiley.com/cms/asset/fc2ee232-ec89-496c-98ae-cc340130a740/jha270094-fig-0001-m.jpg Color:Deep Black tier__2__9353993000528 glutathione peroxidase reaction (3) Apart from the physical barrier, a chemical barrier exists consisting of digestive secretions, antimicrobial peptides, and other cell products (cytokines, inflammatory mediators etc.)
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