Linear regression correlations of spot volume intensity for liver candidate markers cytokeratin 18, IL-2, MUP, S. mansoni PEPCK, peroxiredoxin 6, and liver hydroxyproline content with percent spleen-to-body weight ratio from uninfected (U), 6-week-infected (6wk), 8-week-infected (8wk), 12-week-infected (12wk), and 20-week-infected mice. Linear regression lines: dotted, 8-week-infected mice; dashed, 12-week-infected mice; solid, 20-week-infected mice.