×
+ All Categories
Log in
English
Français
Español
Deutsch
The top documents tagged [weakened virus particles]
Home >
weakened virus particles
What are viruses? A virus is a strand of hereditary material surrounded by a protein coating. Viruses don’t have a nucleus, other organelles, or a cell.
223 views
Messana Eat right Clean house Wash hands Get enough exercise & sleep Proper health care **Use DIFFERENT KNIVES for cutting meats & vegetables.
213 views