List-I | List-II | ||
(a) | Cellular barrier | (i) | Interferons |
(b) | Cytokine barrier | (ii) | Mucus |
(c) | Physical barrier | (iii) | Neutrophils |
(d) | Physiological barrier | (iv) | HCI in gastric juice |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iii) | (iv) | (i) |
2. | (ii) | (iii) | (i) | (iv) |
3. | (iii) | (iv) | (ii) | (i) |
4. | (iii) | (i) | (ii) | (iv) |