Primary defences 0.0 / 5 ? BiologyHealth, illness and diseaseASOCR Created by: elle1999Created on: 14-04-16 12:17 Skin Physical- Blocks pathogens Chemical- Produces chemicals that lower pH of pathogens. 1 of 2 Mucous membranes Protect body parts open to environment Secrete mucus. 2 of 2
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