The Fact That B Cells and T Cells Are Both

question 70

Multiple Choice

The fact that B cells and T cells are both clonally selected means that

• A) each individual can form many different antibodies, but only one type of T cell receptor.
• B) there are five different types of immunoglobulin.
• C) each B cell or T cell produces only one kind of antibody.
• D) B cell lymphocytes change their antibody specificity to match a newly discovered antigen then undergo mitosis to form a clone of plasma cells.
• E) antibodies and T cell receptors are made before exposure to antigen and specific T cells and B cells increase in number upon recognition of an epitope.