Exam 15: Host Defenses II: Specific Immunity and Immunization

The structural and functional differences that distinguish immunoglobulin isotypes are due to variations associated with their Fc fragments.

Which process involves antibodies cross-linking cells or particles into large aggregates?

After secreting antibodies during an immune response,plasma cells then differentiate into memory cells.

Antibody molecules circulate in lymph,blood,and tissue fluids.

The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a/an

During presentation of APC-bound antigen,macrophages and dendritic cells secrete the cytokine _____,which activates T helper cells.

Vaccinia virus is often used in the technique to make

Clonal selection requires the presence of foreign antigens.

An example of artificial passive immunity would be

The immunoglobulin class that has a dimer form found in mucus,saliva,colostrum,and other body secretions is

Antigen presenting cells

Killed or inactivated vaccines are prepared by

Which process involves antibodies coating microorganisms in order to facilitate phagocytosis?

Live,attenuated vaccines

_____ is the most abundant class of antibodies in serum.

The immunoglobulin class that has an Fc region that binds to receptors on basophils and mast cells is

Gamma globulin can be given as immunotherapy to confer artificial passive immunity.

Which process involves a more rapid synthesis and greatly increased titer of antibody when the immune system is subsequently exposed to the same antigen?

Which of the following is not true of the antigen-independent period of lymphocyte development?

Lymphocytes