Which of the following is true of hypersensitivities?
A) They occur when a person's Killer T-Cells attack their own tissues.
B) They are are adaptive immune responses to disease organisms.
C) They include diabetes mellitus and SCID.
D) They involve IgE antibodies and the release of histamine from mast cells and basophils.
Answer: D) They involve IgE antibodies and the release of histamine from mast cells and basophils.
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