Impressions of the campus holiday for kids by the CRC 854. On July the 5th and 12th 2018, science-hungry young researchers discovered the world of immune cells. They had lots of fun competing in the immune cell quiz, making buttons, isolating DNA from strawberries and visiting a working research lab. PhD students and staff members of the SFB demonstrated the world of the immune system to the junior researchers. Additionally, all children could take home comics, audio books and cuddly toys by the dsai e.V.. These will hopefully encourage our visitors to learn more about the wonderful world of the immune system at home!