Cell division can be what?
threatened lacking cells outside of the body uncontrolled without cells Reproduction cycles unidirectional
A B C D E F G H
Cancer is uncontrolled cell division and growth.
Cell division can be uncontrolled. 
Cell division can be what? (A) threatened (B) lacking cells (C) outside of the body (D) uncontrolled (E) without cells (F) Reproduction (G) cycles (H) unidirectional