Effect of SR 48968 on the respiratory response to NKA
↵2-a SR 48968 given orally 2 hr before challenge with NKA (1%).
2-b Values represent mean ± S.E.M. (n = 11).
2-c Measurements at 0.5 min after challenge with NKA.
↵2-d P < .05 compared to zero dose.