Figure 4. Relative expression of immune-related transcripts in epidermal mucus of lake trout collected from Lakes 260, 223, 224, and 373 at the IISD Experimental Lakes Area. Expression data are presented as the normalized count data, centered and scaled, from each individual in order to provide direct comparison of gene expression levels due to lack of a control group. Thus, orange represents higher count level of a particular transcript, whereas blue suggests lower count level. Transcripts shown were differentially-expressed in at least one lake-by-lake comparison.