TABLE 1.

Immunogenicities of the viral proteins tested^a

Protein	No. of amino acids	Average total no. of spots per 106 cells	Normalized cytokine spot count	% Response relative to total no. of CD4 T cells
NA	470	1,128	2.4	13.9
NP	498	1,972	4.0	24.3
NS1	230	2,634	11.4	32.5
HA	565	2,381	4.2	29.3
Total	1,763	8,115		100

^aShown are the numbers of amino acids in each of the viral proteins tested, the sums of the cytokine spot counts for all of the peptides in each protein (column 2), which were then divided by the numbers of amino acids in each protein to yield the normalized cytokine spot count. The normalized cytokine spot count for each protein is represented as a percentage of CD4 T cells dedicated to each protein relative to the total number of viral protein reactive cells.