Senescence of the immune system makes older people more susceptible to cancer and infectious disease because of a decline in __________.
A) alpha and beta globulins
B) red blood cells and platelets
C) complement proteins
D) prothrombin and fibrinogen
E) antigen-presenting cells and helper T cells

Question

Quizplus · Accepted Answer

The decline in antigen-presenting cells and helper T cells in the immune system of older individuals reduces their ability to mount an effective immune response to cancer and infectious diseases, making them more susceptible to these conditions.

Senescence of the Immune System Makes Older People More Susceptible