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Large quantities of antibodies that react to the second entry of antigen and lead to formation of antigen-antibody complexes occurs in
Neutrons
Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly greater than that of protons.
Protons
Positively charged subatomic particles found in the nucleus of an atom, contributing to the atom's mass and defining the element's atomic number.
Electrons
Negatively charged subatomic particles that orbit the nucleus of an atom, involved in electrical conduction and chemical bonding.
Buffer
A solution or compound that stabilizes the pH of a solution by adding or removing hydrogen ions.
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