Elevated expression of Steamer RNA correlates with disease status. RNA was extracted from hemocytes obtained from normal (n = 43), moderate (n = 10), and heavily leukemic (n = 21) individuals collected from different sites in the North Atlantic. Steamer RNA levels were measured using qRT-PCR and the relative standard curve method. The results are expressed as relative levels compared with EF1 mRNA and are shown on y axis log scale. Each circle, square, and triangle represents RNA from a single individual animal. The geometric mean values, indicated by the horizontal line, were compared by two-tailed t test.