Fig. (6) Change in the respiratory variables at different time points in intratracheal exposed animals with NDF at dose of 100 mg/kg, and compared with control. VT (Tidal volume), f (Respiratory frequency), TI (Time of inspiration), TE (Time of expiration), TB (Time of break), TP (Time of pause). Values represent means ± SE, n=4. P < 0.05 (One way ANOVA), as compared to healthy control group.* Values significantly differ from the healthy control value at 0 hour.