So these are the helper T cells that HIV actually attacks. So let's take a look at the following diagram. We have the HIV agent that uses the GP 120 glycoprotein to bind onto the CD four Glycoprotein of this healthy helper T cell. Now, inside the helper T cell, we have these different types of organelles. So we only show the nucleus and we show our endoplasmic reticulum. This is the rough endoplasm reticulum that synthesizes our proteins.