Table 1.

Blocking of M41 S1 binding to chicken respiratory tract tissues^a

Tissue type	Tissue(s) to which M41 S1 (5 μg/ml) bound in the presence of MAAI at the following concn (μg/ml)b:
	0	8	16	32	64
Trachea	Goblet cells/cilia	Cilia	Cilia	Cilia	—
Lung	Epithelium	—	—	—	—

^aTissue slides were preincubated with various concentrations of nonbiotinylated MAAI lectin before the application of Strep-Tactin-precomplexed M41 S1. No binding was observed in the presence of 64 μg/ml MAAI.

^b—, no binding.