Multiple Choice
Changes in the immune system that accompany aging include
A) T cells becoming less responsive to antigens.
B) more cytotoxic T cells responding to infections.
C) increased numbers of T helper cells.
D) higher levels of antibodies after initial exposure to antigens.
E) all of the above
Correct Answer:

Verified
Correct Answer:
Verified
Q3: Figure 1.1<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4854/.jpg" alt="Figure 1.1
Q3: Which of the following is an autoimmune
Q4: The formation of lymph would increase if
Q5: Special lymphocytes that are part of the
Q6: The most active phagocytic cells found in
Q7: Interferons may be described as<br>A) products of
Q8: The function of this immunoglobulin is to
Q10: When an antibody binds to its proper
Q11: Cells that help to regulate the immune
Q51: Figure 1.2<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4854/.jpg" alt="Figure 1.2