Figure 2
Effects of different sub-lethal cadmium concentrations on biochemical parameters in Oncorhynchus mykiss . a) Serum glucose level; after 15 days, the concentration of glucose increased but this elevation was transient so that after 30 days, the level of glucose returned to the same level in the control group, b) Serum triglyceride level; there was a decrease in the level of triglyceride for the first and 15th days but it followed by a rapid elevation in 30 days, c) Serum cholesterol level; a significant reduction was observed after first and 15th days, d) Serum total protein level; there was a significant increase after 30 days. Data are expressed as mean±standard error (SE). Means with different letters are significantly different from each other (P < 0.05). Values with the same letters are not significantly different.