IgA
Julius Dimer was born in 1871.
Julius Dimer died in 1945.
The opposite sequence, so the two strands can bind together to form a dimer.
The formula of the usual elemental oxygen molecule is O2, showing two atoms per molecule. (This answer is coded in the phrase "dimer structure" itself, because "dimer" means "two units".)
Antibody
the antibody can be uncontrollable
Antibody is a noun.
A dimer is formed when two small molecules are joined together through chemical bonds. This results in a molecule consisting of two of the same or different subunits.
Antigen is the opposite of antibody.
antibody
Monoclonal antibody
No, it is not. Antibody = A protein that fights infection.