Question

What are passenger cells in transplantation?

• A. Donor leukocytes in graft tissue
• B. Recipient leukocytes around graft tissue
• C. Recipient dendric cells
• D. Recipient T cells

Hint:

Passenger cells are the donor’s immune cells in the graft, playing a role in graft acceptance or rejection.

Answer 1

The Correct Option is A

Step 1: Understanding Passenger Cells 
Passenger cells refer to the donor’s immune cells (leukocytes) present in the transplanted tissue, which can influence the recipient’s immune response. 
Step 2: Evaluating the Options 
- Donor leukocytes in graft tissue: Correct, these cells can affect the immune rejection process in the recipient. 
- Recipient leukocytes around graft tissue: Incorrect, these are not considered passenger cells. 
- Recipient dendric cells: Incorrect, these are not specifically passenger cells. 
- Recipient T cells: Incorrect, they are part of the recipient's immune system. 
Step 3: Conclusion 
Passenger cells are donor leukocytes within the graft tissue.