wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

When does graft rejection occur?


A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Both Assertion and Reason are true but Reason is not correct explanation of Assertion
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Assertion is true but Reason is false
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Assertion is false but Reason is false
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of Assertion

MHC is a cluster of proteins displayed on the surface of each and every cell of our body. MHC is unique for a person. Our cells are continuously breaking down old proteins into smaller peptides. These small peptides are held by MHC and displayed on the surface of the cell. If all the peptides displayed are from within the body, the immune system can recognise this cell as self. Any cell displaying a protein fragment that is not from within the body, but of a foreign pathogen, is recognised as non-self. When a human transplant is performed, MHC molecules from a donor are recognised by the recipient's immune system triggering an alloimmune response. Matching of donor and recipient for MHC antigens has been shown to have a significant positive effect on graft acceptance.


flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Human Defence
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon