Multiple choice

What is the type of interaction between this particular Ag with 4 epitopes and the IgG Ab?

In an antigen antibody interaction, in the zone of equivalence, the isolated antigen IgG complex was found to be in the molar ratio of Antigen : IgG = 2 : 1

  1. Affinity

  2. Cross reactivity

  3. Avidity

  4. Alloreactivity

  5. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Avidity when the Ag consists of many epitopes (here 4) are mixed with Ab (here IgG) having multiple (here 2) binding sites, the interaction of such type between multivalent Ab and Ag is called, the Avidity.

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