Figure 2
Haptoglobin response (scaled values and centred to the mean of the year) in relation to pair morph combination (‘like-morph’: dark-dark D♂D♀ and light-light L♂L♀; or ‘mixed-morph’: dark–light D♂L♀ and light–dark L♂D♀). The haptoglobin response variable is the difference in haptoglobin concentration between the baseline haptoglobin and the concentration measured after the injection of lipopolysaccharides (LPS). Cross marks are scaled raw values, black dots outliers. All values scaled and centred to the mean of the collection year to remove between-year variation. Differences were not significant.
