You are presented with the question "What can destroy cancer cells?" and the following answer choices: 
- massive damage
 - Heart monitor
 - antibodies
 - rays or beams
 - belt
 - cancer
 - Pollution
 - adding heat

Now knowing that antigens are found on cancer cells and the cells of transplanted organs and antibodies immobilize and destroy their specific antigens, choose the best answer.


 

   antibodies      