| Title | : | A Virus Attacks a Cell |
| Duration | : | 1 minute, 43 seconds |
| Uploader | : | Vaccine Makers Project |
| Added On: | : | 27 July, 2017 |
| Views | : | 2.0M times |
| Likes | : | 0 |
| Source | : | YouTube |
“Like a lock and key” — this is the description of how viruses can get into our cells. Viruses use special proteins on their surface to enter cells. They do this because they need our cells to reproduce. But viruses can only enter certain cells. The
