Enzyme/microorganism that helps in clot dissolution.

The correct answer is Streptokinase

Explanation:

• Cyclosporin: This is an immunosuppressive drug that is primarily used to prevent organ transplant rejection and to treat certain autoimmune conditions. Cyclosporin A is produced by the fungus Trichoderma polysporum. 
• Pectinase: This enzyme breaks down pectin, a polysaccharide found in plant cell walls. It is commonly used in the food industry, particularly in fruit juice production
• Streptokinase: This is an enzyme produced by certain strains of Streptococci bacteria. It is used as a thrombolytic medication to dissolve blood clots in patients who have suffered from conditions like myocardial infarction, pulmonary embolism, and stroke. Streptokinase works by converting plasminogen to plasmin, which then breaks down fibrin, the main protein component of blood clots.
• Protease: This is a general term for enzymes that break down proteins.