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Description: One physical barrier to infection: Mucus and the mechanical action of cilia keep pathogens from getting a foot-hold in the airways to the lungs. Bacteria and other particles get stuck in mucus secreted by goblet cells (gold). Cilia (pink) on other cells sweep the mucus toward the throat for disposal. Picture Stats: Views: 97 Filesize: 512.36kB Height: 1091 Width: 1500 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=47504 |