Textbook Question
The major inflammatory mediator released by degranulating mast cells in type I hypersensitivity is __________.
a. immunoglobulin
b. complement
c. histamine
d. interleukin
e. prostaglandin
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20. Adaptive Immunity
Classes of Antibodies
Struggling with Microbiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which antibody class crosses the placenta from mother to child?
A
IgA.
B
IgE.
C
IgM.
D
IgG.
Verified step by step guidance1
Understand the role of antibodies: Antibodies are proteins produced by the immune system to help fight infections. They are classified into different classes based on their structure and function.
Identify the classes of antibodies: The main classes of antibodies are IgA, IgD, IgE, IgG, and IgM. Each class has a specific role in the immune response.
Focus on the function of IgG: IgG is the most abundant antibody in the blood and extracellular fluid, and it plays a crucial role in the immune response by neutralizing toxins and viruses.
Learn about placental transfer: During pregnancy, certain antibodies can cross the placenta from the mother to the fetus, providing the newborn with passive immunity.
Determine which antibody class crosses the placenta: Among the antibody classes, IgG is the only one that can efficiently cross the placenta, providing the fetus with protection against infections during the early months of life.
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