Some body defences against pathogens are shown below. 1 mucus 2 skin 3 stomach acid 4 phagocytosis Which of these can stop pathogens from entering body tissues?
- A1, 2, 3 and 4
- B1, 2 and 3 only
- C2 and 3 only
- D4 only
Biology 0610 · IGCSE · Diseases and immunity
Some body defences against pathogens are shown below. 1 mucus 2 skin 3 stomach acid 4 phagocytosis Which of these can stop pathogens from entering body tissues?