Nikolas
Created page with "== How do immune cells meet the antigen? == It’s important that the immune system has the correct reaction to an antigen, but for the immune system to do anything it has to know that there are foreign antigens present. If you cut your finger and only a few bacteria enter the wound (or survive the disinfectant you apply), it seems very unlikely that they will be recognized by an immune cell in a short period of time. File:T-cell circulation.png|thumb|333x333px|How T-c..."