TABLE 1.

Plaque assay results: i.t. immunization in conventional C3H mice

Tissue	PFU/g of tissue on daya:
	3	6	11	14	21	28
Lung	1.0 × 107	1.7 × 106	1.0 × 105	2.5 × 103	None	None
Trachea	2.6 × 107	1.2 × 105	1.0 × 104	None	None	None
Liver	4.0 × 105	1.4 × 104	2.4 × 101	None	None	None
Spleen	3.0 × 106	4.3 × 104	7.7 × 103	None	None	None
Small intestine	5.5 × 105	3.6 × 104	None	None	None	None

^aTwo mice were used for each time point.