The study looked at how much lead and cadmium were in Nile tilapia from Egypt and how these heavy metals affected the fish. They found that the levels of lead and cadmium in the fish were too high. The fish's antioxidant status was also affected by the heavy metals. The researchers discovered that certain genes in the fish were turned on more in response to the high levels of lead and cadmium. This study helps us understand how fish respond to pollution and can help us monitor their health in polluted areas.