Fact 1: Antigens are found on cancer cells and the cells of transplanted organs.

Fact 2: Antibody production is triggered by antigens.

Given the two facts above, answer the question "What do cancer cells produce?" with the following options: 
- heat energy
 - direct energy
 - Energy
 - massive damage
 - rays or beams
 - antibodies
 - Energy.
 - Chemical energy


 

      antibodies   