Fact 1: Cancer cells divide more often than normal cells, and grow out of control.

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

Given the two facts above, answer the question "_ cells divide more often than normal cells" with the following options: 
- Nerve
 - retina
 - Most plants
 - heat or cold
 - Endothelial
 - Stem
 - Malignant
 - layers of fat


 

       Malignant  