Indicate whether each statement is true or false. If the statement is false, change the underlined word or phrase to make the statement true.
________ Cyclosporine is released by degranulating mast cells.

Verified step by step guidance

1. Identify the key concept in the statement: Cyclosporine and its source of release in the immune system.
2. Recall that mast cells release substances through degranulation, but these substances are typically histamine, cytokines, and other inflammatory mediators, not Cyclosporine.
3. Understand that Cyclosporine is actually an immunosuppressive drug, not a naturally released molecule from mast cells.
4. Determine the correct phrase to replace 'Cyclosporine' with, which should be a substance that mast cells release upon degranulation, such as 'histamine'.
5. Rewrite the statement with the corrected phrase: 'Histamine is released by degranulating mast cells.' and mark the original statement as false.

Key Concepts

Mast Cells and Their Function

Mast cells are immune cells involved in allergic reactions and inflammation. They contain granules filled with histamine and other mediators, which are released during degranulation to trigger immune responses.

Degranulation Process

Degranulation is the process by which mast cells release the contents of their granules, such as histamine and cytokines, into surrounding tissues. This release helps mediate inflammation and allergic reactions.

Cyclosporine and Its Source

Cyclosporine is an immunosuppressive drug produced by the fungus Tolypocladium inflatum, not by mast cells. It is used to prevent organ transplant rejection by inhibiting T-cell activation.