Explore More
| Column-$I$ | Column-$II$ |
| $1$. Cellular barrier | $A$. Saliva in the mouth |
| $2$. Physiological barrier | $B$. Interferons |
| $3$. Cytokine barrier | $C$. Natural killer (type of lymphocyte) |
| $4$. Physical barrier | $D$. Mucus coating of the respiratory tract |
Vedclass Products
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialGenerate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeLive online exams with unlimited students, 360° analytics & white-label branding.
See Demo