C Three spontaneously breaks down, but then this is quickly recycled. It's inhibited and then recycled. Now, what happens if we do have some type of pathogen, for example, bacterial cells nearby? This type of reaction, so this is shown in diagram two. Let's suppose now we have the same spontaneous reaction that takes place to form the C three B and C three A. Now, because we don't have any nearby healthy cell, we only have bacterial cells.