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5 Cards in this Set

  • Front
  • Back
a. Mice infected with Nippostrongulus brasiliensis exhibit decreased production of IgE
False: IgE is increased
b. IL-4 decreases IgE production by B cells
False: IL-4 increases IgE production
c. The initial step in the process of mast cell degranulation is crosslinking of Fc receptors.
True
d. Antihistamines are effective for the treatment of type III hypersensitivity
False: Antihistamines are helpful in the type I hypersensitivities, which involves release of histamines by mast cell degranulation. Because type III hypersensitivity involves immune complex deposition, antihistamines are ineffective.
e. Most pollen allergens contain a single allergenic component.
False: Most allergens contain multiple allergenic components.

f. Babies can acquire IgE-mediated allergies by passive transfer of maternal antibodies.
• False: Unlike IgG, IgE cannot pass through the placenta

g. Tranfusion reaction are a manifestatieon of type II hypersensitivity
• True