Which of the following secretes antibodies that have the same target as the antibodies on the surface of sensitized B cells?
C)helper T cells
D)cytotoxic T cells
E)suppressor T cells
Choose the most accurate characteristic of Class II MHC proteins.
A)They dampen the responses of other T cells and of B cells.
B)They divide to produce memory cells and more active helper T cells.
C)They are found in the plasma membranes of all nucleated cells.
D)They consist of circulating proteins that assist antibodies in the destruction of pathogens.
E)They are found in the membranes of lymphocytes and antigen-presenting cells.
During B cell sensitization and activation, antigens enter the B cell through
Identify the correct match between the immunoglobulins and their characteristics.
A)IgA/occurs in endocrine secretions
B)IgD/largest and most diverse
D)IgG/occurs in tears and saliva
E)IgM/stimulates release of histamine