question: Helper T cells can be activated by 1.interacting with an infected cell expressing an antigen-MHC I complex. 2.interacting with a macrophage expressing an antigen-MHC II complex. 3.binding of their CD28 to B7 on antigen-presenting cells. a. 1 only b. 2only c. 1 and 2only d. 2 and 3only e. 1, 2 and 3
question: Helper T cells can be activated by 1.interacting with an infected cell expressing an antigen-MHC I complex. 2.interacting with a macrophage expressing an antigen-MHC II complex. 3.binding of their CD28 to B7 on antigen-presenting cells. a. 1 only b. 2only c. 1 and 2only d. 2 and 3only e. 1, 2 and 3
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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question: Helper T cells can be activated by
1.interacting with an infected cell expressing an antigen-MHC I complex.
2.interacting with a macrophage expressing an antigen-MHC II complex.
3.binding of their CD28 to B7 on antigen-presenting cells.
a. 1 only
b. 2only
c. 1 and 2only
d. 2 and 3only
e. 1, 2 and 3
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