Which of the following best describes IgM antibodies?
A) They cause basophils and eosinophils to degranulate.
B) They are the most common type of antibody in the blood during the initial phases of an immune response.
C) They are the antibody class found in body secretions.
D) They interact with phagocytes and NK cells.
E) They can cross the placenta to provide passive immunity.

Question

Quizplus · Accepted Answer

IgM antibodies are the first type of antibody produced in response to an infection and are the most common type of antibody in the blood during the initial phases of an immune response.

Which of the Following Best Describes IgM Antibodies