What is the difference between a TCR and a BCR?

Mark each statement as either true or false. Rewrite false statements to make them true by changing the underlined words.

__________ Secretion of antibodies by activated B cells is a form of cell-mediated immunity.

In which of the following sites in the body can B cells be found?

a. Lymph nodes

b. Spleen

c. Red bone marrow

d. Intestinal wall

e. All of the above

Match the correct form of adaptive immunity to the scenarios below.

A. Cell-Mediated Immunity.                                B. Humoral Immunity

_____1. A macrophage acting as an APC is activated by a CD4 effector cell.
_____2. A naive B cell is activated after binding an antigen and differentiates into a plasma cell.  
_____3. Responds to exogenous antigens.  
_____4. Responds to endogenous antigens.
_____5. A liver cell infected with a virus undergoes apoptosis when signaled by a CD8 effector cell.  

A naive B cell is activated when:

Antibodies are made by:

In which of the following sites in the body can B cells be found?

The antibody-secreting progeny of an activated B cell are called: