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Unformatted text preview: Enzymes and Toxins Enzymes. Many pathogens produce a series of enzymes to help overcome body defenses and establish themselves in the host. One example is leukocidins , a group of enzymes that destroy white blood cells. This destruction lessens the body's ability to perform phagocytosis. Other bacterial enzymes are hemolysins. These enzymes destroy red blood cells. Streptococci, staphylococci, and certain Clostridium species produce hemolysins. Coagulases are bacterial enzymes that clot the blood. These enzymes convert fibrinogen into fibrin, which forms the threads of a blood clot. The clot helps staphylococci avoid the body's phagocytes and contributes to its pathogenicity. Other important enzymes are streptokinase and hyaluronidase. Streptokinase is a streptococcal enzyme that dissolves blood clots. This activity helps the organism escape the body's attempt to wall enzyme that dissolves blood clots....
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