MCQOPTIONS
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				| 1. | 
                                    The key cell types involved in the acquired immunity include all EXCEPT________________? | 
                            
| A. | B lymphocytes | 
| B. | Erythrocytes | 
| C. | T lymphocytes | 
| D. | Antigen presenting cells (APC | 
| Answer» C. T lymphocytes | |