1. Viruses

2. What are Viruses
A virus is a non-cellular particle made up of genetic material and protein that can invade living cells.

3. Herpes Virus

4. The Structure Of a Virus
Viruses are composed of a core of nucleic acid surrounded by a protein coat called a capsid
The Nucleic core is either made up of DNA or RNA but never both.

5. Cycle of Lytic and Lysogenic

6. Vaccines Viruses grown on chicken embryos are attenuated vaccines
Another type of vaccine is made by heat killing the virus

7. Retrovirus
Change DNA into RNA.
Example of a Retrovirus is HIV