The first event in antibody-mediated immunity is the sensitization of ________ cells

Which of the following can increase the physiological dead space in apneic patients receiving volume control ventilation?

a. I:E ratio >1:1 b. A slow flow rate c. Adding an inflation hold d. Inspiratory time <0.5 second

Research on sport participation and general delinquency rates generally shows that delinquency rates among athletes are

A. higher among golfers and tennis players than among football players. B. often lower than rates for other students from similar backgrounds. C. always higher than rates among other students from similar backgrounds. D. lower than rates among other students only for football players.