Exam 15: Host Defenses Ii: Specific Immunity and Immunization

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

All of the following statements reflect the qualities of a safe and effective vaccine, except _______.

Each _____ fragment of an antibody molecule contains the variable regions of a heavy and light chain that folds into a groove for one epitope.

Antitoxins _______.

Plasma cells _______.

In order for B cells to produce antibodies and cytotoxic T cells to attack infected host cells, they must first _______.

Fluzone is a brand name for a very commonly given in?uenza vaccine. The vaccine is prepared by ?rst harvesting ?u viruses in chicken embryos and then breaking apart virus particles into protein subunits, thereby inactivating the virus. Your friend refuses to get the vaccine. Which of these statements is the only valid reason for her not to get the ?u vaccine?

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

A patient enters your clinic with a suspected helminthic infection. In support of this diagnosis, you suspect elevated levels of which antibody in the patient's serum?

Cell surface markers involved in immune reactions _______.

Activation of B cells can occur when antigen binds to B cell surface immunoglobulin receptors.

The histocompatibility complex proteins function in _______.

The adaptive immune system is complex, but it can be summarized in four consecutive stages: i) lymphocyte encounter with an immunogen, ii) development of lymphocyte speci?city against that immunogen, iii) 2nd encounter with the immunogen, and iv) development of memory cells.

All of the following are characteristics of IgM except _______.

The monomer subunit of immunoglobulin molecules has all of the following except _______.

Which lymphocytes lack specificity for antigen and attack cancer cells and virus-infected cells?

What process generates many B cells and T cells that are activated against specific antigens?

Which of the following do not serve as antigen presenting cells?

Which process involves antibodies covering surface receptors on a virus or toxin molecule, thereby disrupting their activity?

Live, attenuated vaccines _______.