Refer to the figure showing the adaptive immune system. 
The cell labeled 2 is a _______ and the cell labeled 3 is a _______ cell.
A) macrophage; memory
B) T-helper cell; B
C) B cell; T
D) cytotoxic T cell; memory
E) memory cell; plasma
Correct Answer:
Verified
Q164: Which statement is true?
A) The humoral immune
Q165: Which characterizes antigenic determinants?
A) Specific regions on
Q166: Cytotoxic T cells
A) activate B lymphocytes.
B) can
Q167: According to the clonal selection theory,
A) an
Q168: The fact that B cells and T
Q170: Serum from guinea pigs injected with less
Q171: Which statement is correct?
A) People who have
Q172: Which characterizes antibodies?
A) They occur in blood
Q173: Which statement is false?
A) Vaccination initiates a
Q174: What typically prompts a naïve B cell
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents