豚鼠体内含硫量的增加，可使心肌发生不同程度的退变，如果体内含硒量也增加，心肌则不发生退变。高硫能抑制机体摄取硒的能力，使体内含硒量下降。心肌退变的程度与体内含硒量呈负相关。提示：高硫对心肌的损伤是通过低硒来完成的，高硫只是诱发低硒形成的条件；心肌退变可能与血硒和血硫是否维持在一定的比值范围内有关。 Guinea pigs increase the body’s sulfur content, myocardial degeneration can occur in varying degrees, if the body also increased selenium content, myocardial degeneration does not occur. High sulfur can inhibit the body’s ability to selenium intake, so that the body’s selenium content decreased. The extent of myocardial degeneration and the content of selenium in the body was negatively correlated. Hint: The injury of high sulfur to myocardium is accomplished by low selenium, which is only the condition that induces the formation of low selenium. The degeneration of myocardium may be related to whether blood selenium and blood sulfur are maintained within a certain ratio range.