There are a few things you need to know in order to understand HIV infection.
DNA: DNA is like the "blueprint" for building living cells.
Enzymes: Enzymes are like the workers of a cell. They build new proteins, transport materials around the cell, and carry out other important cellular functions.
RNA: RNA is like the construction boss. Cells use RNA to tell enzymes how to build a specific part of a cell. To make a new protein, enzymes will copy a specific part of the DNA into a piece of RNA. This RNA is then used by other enzymes to build a new protein or enzyme.
Proteins: The building blocks that are used to make living things.
Nucleus: A small package inside the cell where the genetic material is kept.