Multiple choice

IgG antibodies are very important in fighting bacterial and viral infections. Which among the following statements regarding IgG antibodies is incorrect?

  1. They appear early in the primary immune response.

  2. They neutralise bacterial toxins.

  3. They can fix complement.

  4. They cross the human placenta.

  5. They protect body surfaces that are exposed to foreign substances.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

IgM is the class which appears early following the first encounter with a specific antigen.

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