Author Question: Which of the following is not characteristic of a Type I hypersensitivity reaction? a. can occur at ... (Read 73 times)

bcretired · **on:** Aug 20, 2018

Which of the following is not characteristic of a Type I hypersensitivity reaction?
a. can occur at any point after the first exposure to the antigen
b. long-term complications occur from deposition of antigen within organs and cells
c. symptoms are caused primarily by release of histamine from the mast cells
d. can be a food allergy

Question 2

When Samuel was stung by a bee, his reaction was a drop in blood pressure, difficulty breathing, and fainting. This severe reaction is called:
a. cytotoxic hypersensitivity.
b. ABO blood reaction.
c. anaphylaxis.