In higher vertebrates, the immune system can distinguish selfcells and non-self. If this property is lost due to genetic abnormality and it attacks selfcells, then it leads to
autoimmune disease
active immunity
allergic response
graft rejection.
An antigen is
Assertion : Interferons are effective against viruses.
Reason : Proteins which can be synthesized only by genetic engineering are effective against viruses.
Which of the following is an autoimmune disorder?
The term ’active immunity' means
Where are $B\,-$ cells and $T\,-$ cells formed ? How do they differ from each other ?