Fig. 4.

Linear regression model of postvaccination immune cell frequency correlates of H1N1 titer response. Top features selected from the lasso (α=1) solutions. (a) Caterpillar plot of feature frequencies. Red symbols (bars) display the mean (standard deviation) of model feature frequencies across runs. Blue symbols (bars) display the mean (standard deviation) of null model feature frequencies across run/permutation null model combinations. (b) Heatmap of feature frequencies across α. (c) Caterpillar plot of feature coefficients. (d) Heatmap of feature coefficients across α. White denotes missing values, which occur for features whose frequencies are zero across all runs for a given α