Table 3.

Contribution of Each Principal Component to the Major Linkage Peak

Principal Component	Coefficient for Standardized TNF-BCG	Coefficient for Standardized TNF-BCG + γ	Proportion of Phenotypic Variance Explained	Contribution toTNF1
PC1	0.71	0.71	0.90	0.38
PC2	0.71	−0.71	0.10	0.62

Abbreviations: PC1, first principal component; PC2, second principal component; TNF-BCG, tumor necrosis factor secreted following BCG stimulation; TNF-BCG + γ, tumor necrosis factor secreted following BCG plus interferon-γ stimulation.