 
			 
			MCQOPTIONS
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				| 1. | Self reactive antibodies are not found in significant concentration in normal serum because | 
| A. | it is impossible to generate a self-reactive antibody | 
| B. | self reactive B cells are killed by CD8 T cells | 
| C. | B cells that are stimulated via their surface bound antibody in the absence of T cell help to commit suicide | 
| D. | self reactive B cells switch to IgA which is all secreted and not present in serum | 
| Answer» D. self reactive B cells switch to IgA which is all secreted and not present in serum | |