#Question id: 1988
#Unit 4. Cell Communication and Cell Signaling
What are CD4 and CD8?
#Question id: 1989
#Unit 4. Cell Communication and Cell Signaling
Which of the following are T cells of the immune system?
#Question id: 1990
#Unit 4. Cell Communication and Cell Signaling
B cells interacting with helper T cells are stimulated to differentiate when
#Question id: 1991
#Unit 4. Cell Communication and Cell Signaling
Why can normal immune responses be described as polyclonal?
#Question id: 1992
#Unit 4. Cell Communication and Cell Signaling
How do antibodies of the different classes IgM, IgG, IgA, IgD, and IgE differ from each other ?
#Question id: 1993
#Unit 4. Cell Communication and Cell Signaling
When antibodies attack antigens, clumping of the affected cells generally occurs. This is best explained by