Fact 1: Viruses contain DNA but not much else.

Fact 2: Some smallpox viruses are maintained in laboratories.

Given the two facts above, answer the question "What contains DNA but not much else?" with the following options: 
- cigarettes
 - insects
 - bacteria
 - Most plants
 - loose soil
 - pollen
 - mammals
 - smallpox


 

        smallpox 