Expression of the neutrophil marker myeloperoxidase (MPO) [57] (Fig. 4c) (ANOVA: F(4,40) = 5.3, P = 0.0016) and neutrophil chemoattractant IL17A [58, 59] (Fig. 4b) (ANOVA: F(4,40) = 3.088, P = 0.026) was remarkable; they were both suppressed in NI-HD but most highly induced upon infection in fish exposed to GLs-enriched feeds. The gene discussed is MPO; the disease is infection.