So what exactly is a dendritic cell? Well, a dendritic cell is a specialized type of immune cell that is found in those areas of our body that are close to the outside environment. And that includes places tissues like our skin, our gut, our stomach and our digestive tract as well as our lungs. So the air pathogeways of our lungs, like the trachea, the bronchi and our bronchial. So this is what a derivative cell actually looks like. It has these projections, these dendrites.