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

Fact 2: Cancer cells are a type of malignant cell.

Given the two facts above, answer the question "What can be found on malignant cells?" with the following options: 
- bacteria
 - weapons
 - bones
 - fever
 - the Sun
 - acetic acid
 - antigens
 - parasites


 

       antigens  