Ch. 20 The Lymphatic System and Immunity
Chapter 20, Problem 20.18a
Type I hypersensitivity is due to release of inflammatory mediators from_____, and type IV hypersensitivity is due to the actions of_____.
a. TH cells; macrophages
b. neutrophils; TH cells
c. B cells; TC cells
d. mast cells; TH cells
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