Table 4. Loss of trachea cilia from challenged chickens

Group Loss of trachea cilia1 (Mean±SD)
URTB MRTC LRTD
G1 K24/18 3.2±0.8 3.2±1.1 2.4±1.1
G2 K29/18 4.0±0.0 3.8±0.4 3.6±0.9
G3 K183/18 3.8±0.4 4.0±0.0 4.0±0.0
G4 Control 0.2±0.4 0.2±0.4 0.3±0.5
Loss of trachea cilia scores: 0=normal cilia; 1=<25% cilia damaged; 2=25∼50% cilia damaged; 3=50~75% cilia damaged; 4=75~100% cilia damaged. URT, upper respiratory tract; MRT, Middle respiratory tract; LRT, lower respiratory tract.