Immune System
Which of the following is correct for isoantigens?

They are antigens found in some members of different species
They are antigens found in all members of a species
They are antigens found in all members of different species
They are antigens found in some members of a species

ANSWER DOWNLOAD EXAMIANS APP

Immune System
Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated?

Both (a) and (b)
By the combination of different heavy and light chains that form the antigen binding site
By rearrangements of the DNA encoding the variable regions of the heavy and light chains
Antibody proteins can physically change their shape to bind different epitopes

ANSWER DOWNLOAD EXAMIANS APP