Our own immune systems do so much for us. And yet, we don’t fully understand how they go about their jobs. To get to the root of the matter takes many years of study, combining cellular biology, clinical work with patients, and animal studies of disease models. Christopher Lupfer is one of the scientists engaged in teasing out the details and works in the Department of Biology at Missouri State University. He stops by STEM Spots to talk about the bugs inside us and the machinery that combats them.