Fact 1: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.

Fact 2: For example, a fibroid is a tumor, a wart is a tumor, and cancers are tumors.

Given the two facts above, answer the question "A fibrod, wart and, cancer are all forms of what cell?" with the following options: 
- Something coming from a gland
 - remains of prehistoric life
 - cells divide uncontrolled
 - sub-units of species
 - deadly and devastating
 - the body's largest organ
 - share properties
 - cause people to become sick.


 

   cells divide uncontrolled      